Cita APA (7th ed.)

STILL, R. (2011). SALES MANAGEMENT (5TH.). PEARSON EDUCATION.

Cita Chicago (17th ed.)

STILL, RICHARD. SALES MANAGEMENT. 5TH. NEW DELHI: PEARSON EDUCATION, 2011.

Cita MLA (9th ed.)

STILL, RICHARD. SALES MANAGEMENT. 5TH. PEARSON EDUCATION, 2011.