APA (7th ed.) Citation

(1989). 28th Edition Ulrich's International Periodicals Directory 1989-90: Volume 1 Subjects A-G. R.R.Bowker.

Chicago Style (17th ed.) Citation

28th Edition Ulrich's International Periodicals Directory 1989-90: Volume 1 Subjects A-G. New York: R.R.Bowker, 1989.

MLA (9th ed.) Citation

28th Edition Ulrich's International Periodicals Directory 1989-90: Volume 1 Subjects A-G. R.R.Bowker, 1989.

Warning: These citations may not always be 100% accurate.