Cita APA (7a ed.)

Bowker, R. R. (1997). Ulrich`s plus: The complete Ulrich`s international periodicals directory, including irregulars serials and annuals, on compact laser disc (6th. ed.). Bowker.

Cita Chicago Style (17a ed.)

Bowker, R. R. Ulrich`s Plus: The Complete Ulrich`s International Periodicals Directory, Including Irregulars Serials and Annuals, on Compact Laser Disc. 6th. ed. New Jersey: Bowker, 1997.

Cita MLA (8a ed.)

Bowker, R. R. Ulrich`s Plus: The Complete Ulrich`s International Periodicals Directory, Including Irregulars Serials and Annuals, on Compact Laser Disc. 6th. ed. Bowker, 1997.