CEI. (1991). PROFIT THROUGH QUALITY. C E I.
Cita Chicago (17th ed.)CEI. PROFIT THROUGH QUALITY. C E I, 1991.
Cita MLA (9th ed.)CEI. PROFIT THROUGH QUALITY. C E I, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)