Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

PARSONS WJ. IMPROVING PURCHASING PERFORMANCE. GOWER, 1982.