Cita APA (7a ed.)

PARSONS WJ. (1982). IMPROVING PURCHASING PERFORMANCE. GOWER.

Cita Chicago Style (17a ed.)

PARSONS WJ. IMPROVING PURCHASING PERFORMANCE. ENGLAND: GOWER, 1982.

Cita MLA (9a ed.)

PARSONS WJ. IMPROVING PURCHASING PERFORMANCE. GOWER, 1982.