Cita APA

(1992). Ulrich's international periodicals directory: A classified guide to current periodicals, foreing and domestic. New York: R.R. Bowker.

Citación estilo Chicago

Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreing and Domestic. New York: R.R. Bowker, 1992.

Cita MLA

Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreing and Domestic. New York: R.R. Bowker, 1992.