Como dizer "Obra (se referindo a livro)" em inglês

Just keep it simple:

The Encyclopedia xyz says...

Alacerda, I don´t know your English level, but here goes two more simple ways, and one that could be useful to some university student (so academical writting - a bit more "complicated".)
If your level is basic, just like mine, you may pick the first or second.



According to Brittanica, a genetically modified organism is defined as “an organism whose genome has been engineered in the laboratory in order to favor the expression of desired physiological traits or the production of desired biological products.”



© 2001-2007 by D.T. Haynie. All rights reserved. ANSWERS TO EXERCISESChapter 11. Encyclopædia Britannica CD98 defines energy as the “the capacity to produce an effect.”





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The ACADEMICAL sort of citing...


http://www.bibme.org/citation-guide/MLA ... clnk&gl=br

How to cite an encyclopedia/dictionary in a bibliography using MLA

The most basic entry for an encyclopedia/dictionary consists of the author name(s), article title, encyclopedia/dictionary name, year published, and medium.

Last Name, First Name. "Article title." Encyclopedia/Dictionary name. Year Published. Medium.

Smith, John. "Internet." Encyclopedia Britannica. 2009. Print.

The first author's name should be reversed, with a comma being placed after the last name and a period after the first name (or any middle name). The name should not be abbreviated and should be written exactly as it appears in the encyclopedia/dictionary. Titles and affiliations associated with the author should generally be omitted. A suffix, such as a roman numeral or Jr./Sr. should appear after the author's given name, preceded by a comma.

For a page with two or more authors, list them in order as they appear in the encyclopedia/dictionary. Only the first author's name should be reversed, while the others are written in normal order. Separate author names by a comma, and place the word "and" before the last author's name. For articles with three or more authors, you may either include each author in the citation or only include the first author, followed by the abbreviation "et al."

Smith, John, Jane Doe, and Bob Anderson. "Internet." Encyclopedia Britannica. 2009. Print.

Smith, John, et al. "Internet." Encyclopedia Britannica. 2009. Print.

The full article title should be placed within quotations. Unless there is puncutation (sic) that ends the article title, place a period after the title within the quotations. After the article title, include the encyclopedia/dictionary name and italicize it, followed by a period. If an edition is stated, cite it after the encyclopedia/dictionary name, followed by the abbreviation "ed." Conclude the citation with the year of publication and a period.

Smith, John. "Internet." Encyclopedia Britannica. 8th ed. 2009. Print.

Olá,

Obrigado pelas respostas até agora. De fato eu poderia mencionar uma enciclopédia dizendo: "The Encyclopedia xyz says..."

Mas talvez eu tenha dado muita ênfase à "Enciclopédia" sem explicar direito que ela foi apenas um exemplo. Desculpem-me

O pronto principal seria a palavra "obra", por exemplo, se eu quero citar outro livro - que é uma "obra". É essa palavra que eu gostaria de usar em uma palestra que vou dar.

Thanks in advance