Cita APA (7th ed.)

STRAFFORD JOHN. (1986). EFFECTIVE SALES MANAGEMENT. HEINEMANN.

Cita Chicago (17th ed.)

STRAFFORD JOHN. EFFECTIVE SALES MANAGEMENT. LONDON: HEINEMANN, 1986.

Cita MLA (9th ed.)

STRAFFORD JOHN. EFFECTIVE SALES MANAGEMENT. HEINEMANN, 1986.