Não informado. (1967). Subject guide to forthcoming books. R. R. Bowker.
Style de citation Chicago (17e éd.)Não informado. Subject Guide to Forthcoming Books. New York: R. R. Bowker, 1967.
Style de citation MLA (8e éd.)Não informado. Subject Guide to Forthcoming Books. R. R. Bowker, 1967.
Attention : ces citations peuvent ne pas être correctes à 100%.