Cita APA (7a ed.)
R.R. Bowker Company. (1986). Ulrich's international periodicals directory: A classified guide to current periodicals, foreign and domestic.
Cita estilo Chicago (17a ed.)
R.R. Bowker Company. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. 1986.
Cita MLA (9a ed.)
R.R. Bowker Company. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. 1986.
Precaución: Estas citas no son 100% exactas.