APA
(1988). Ulrich's International Periodicals Directory. 1988-89. Now including. Irregular Serials and Annuals. New York: R. R. Bowker.
Chicago
1988. Ulrich's International Periodicals Directory. 1988-89. Now including. Irregular Serials and Annuals. New York: R. R. Bowker.
Harvard
(1988). Ulrich's International Periodicals Directory. 1988-89. Now including. Irregular Serials and Annuals. New York: R. R. Bowker.
MLA
Ulrich's International Periodicals Directory. 1988-89. Now including. Irregular Serials and Annuals. New York: R. R. Bowker. 1988.
TekstJęzyk: angielski Szczegóły wydania: New York : R. R. Bowker, (1988).Opis: LIV, 1690 s. , +Cross-indeks 14 s. ; 30 cm.ISBN: 
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