Cita APA (7a ed.)

Sollish, F., & Semanik, J. (2005). The purchasing and supply manager's guide to the C.P.M. exam. Sybex.

Cita Chicago Style (17a ed.)

Sollish, Fred, y John Semanik. The Purchasing and Supply Manager's Guide to the C.P.M. Exam. San Francisco [etc.]: Sybex, 2005.

Cita MLA (9a ed.)

Sollish, Fred, y John Semanik. The Purchasing and Supply Manager's Guide to the C.P.M. Exam. Sybex, 2005.