(1997). Ulrich's international periodicals directory 1997: Including irregular serials & annuals (35th edition.). Bowker.
Цитирование в стиле Чикаго (17-е изд.)Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. New York: Bowker, 1997.
Цитирование MLA (9-е изд.)Ulrich's International Periodicals Directory 1997: Including Irregular Serials & Annuals. 35th edition. Bowker, 1997.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.