Cita APA (7th ed.)

YOUNG J R. (1978). PERSONAL: SELLING, FUNCTION, THEORY PRACTICE. DRYDEN PRESS.

Cita Chicago (17th ed.)

YOUNG J R. PERSONAL: SELLING, FUNCTION, THEORY PRACTICE. U S A: DRYDEN PRESS, 1978.

Cita MLA (9th ed.)

YOUNG J R. PERSONAL: SELLING, FUNCTION, THEORY PRACTICE. DRYDEN PRESS, 1978.