Cita APA

(1973). ULRICH'S international periodicals directory (15. ed.). New York: R. R. Bowker.

Citación estilo Chicago

ULRICH'S International Periodicals Directory. 15. ed. New York: R. R. Bowker, 1973.

Cita MLA

ULRICH'S International Periodicals Directory. 15. ed. New York: R. R. Bowker, 1973.