APA-referens (7:e uppl.)

Siess, J. A. (2001). The OPL sourcebook: A guide for solo and small libraries. Information Today.

Chicago-referens (17:e uppl.)

Siess, Judith A. The OPL Sourcebook: A Guide for Solo and Small Libraries. Medford, New Jersey: Information Today, 2001.

MLA-referens (9:e uppl.)

Siess, Judith A. The OPL Sourcebook: A Guide for Solo and Small Libraries. Information Today, 2001.