APA (7e ed.) Bronvermelding

Graves, E. C. (1966). Ulrich's international periodicals directory: A classified guide to current periodicals, foreign and domestic (Eleventh edition.). R.R. Bowker Company.

Chicago (17e ed.) Bronvermelding

Graves, Eileen C. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. Eleventh edition. New York: R.R. Bowker Company, 1966.

MLA (8e ed.) Bronvermelding

Graves, Eileen C. Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. Eleventh edition. R.R. Bowker Company, 1966.