APA-referens (7:e uppl.)

(1997). Ulrich's international periodicals directory 1997: Including irregular serials & annuals (35th edition.). Bowker.

Chicago-referens (17:e uppl.)

Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. New York: Bowker, 1997.

MLA-referens (9:e uppl.)

Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. Bowker, 1997.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.