Não informado. (1980). Ecology Abstracts. Cambridge Scientific Abstracts.
Style de citation Chicago (17e éd.)Não informado. Ecology Abstracts. Bethesda, Md: Cambridge Scientific Abstracts, 1980.
Style de citation MLA (8e éd.)Não informado. Ecology Abstracts. Cambridge Scientific Abstracts, 1980.
Attention : ces citations peuvent ne pas être correctes à 100%.