Lua APA (7ú heag.)

Não informado. (1940). Biological symposia. American Association for the Advancement of Science.

Lua i Stíl Chicago (17ú heag.)

Não informado. Biological Symposia. Lancaster, Pa: American Association for the Advancement of Science, 1940.

Lua MLA (8ú heag.)

Não informado. Biological Symposia. American Association for the Advancement of Science, 1940.

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