APA (7th ed.) Citation

R.R. Bowker Company. (1999). Ulrich's periodicals directory. R.R. Bowker.

Chicago Style (17th ed.) Citation

R.R. Bowker Company. Ulrich's Periodicals Directory. [New Providence, N.J.]: R.R. Bowker, 1999.

MLA (9th ed.) Citation

R.R. Bowker Company. Ulrich's Periodicals Directory. R.R. Bowker, 1999.