(1997). Ulrich's international periodicals directory 1997: Including irregular serials & annuals (35th edition.). Bowker.
Style de citation Chicago (17e éd.)Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. New York: Bowker, 1997.
Style de citation MLA (9e éd.)Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. Bowker, 1997.
Attention : ces citations peuvent ne pas être correctes à 100%.