Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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