Não informado. (1978). Database: World's largest information content magazine. Online.
Style de citation Chicago (17e éd.)Não informado. Database: World's Largest Information Content Magazine. Weston, Conn: Online, 1978.
Style de citation MLA (8e éd.)Não informado. Database: World's Largest Information Content Magazine. Online, 1978.
Attention : ces citations peuvent ne pas être correctes à 100%.