Παραπομπή σε μορφή APA (7η εκδ.)

The Bowker International Serials Database & Yuster, L. C. (1989). Ulrich's international periodicals directory: 1989-90 (28th ed.). R.R. Bowker.

Παραπομπή σε μορφή Chicago (17η εκδ.)

The Bowker International Serials Database και Leigh C. Yuster. Ulrich's International Periodicals Directory: 1989-90. 28th ed. New York: R.R. Bowker, 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

The Bowker International Serials Database και Leigh C. Yuster. Ulrich's International Periodicals Directory: 1989-90. 28th ed. R.R. Bowker, 1989.