Cita APA (7a ed.)

National Institute of Governmental Purchasing (U.S.). (1993). Government procurement. Penton Pub..

Cita Chicago Style (17a ed.)

National Institute of Governmental Purchasing (U.S.). Government Procurement. Cleveland, Ohio: Penton Pub., 1993.

Cita MLA (8a ed.)

National Institute of Governmental Purchasing (U.S.). Government Procurement. Penton Pub., 1993.