Cita APA (7th ed.)

FREESTONE JULIE. (1989). TELEMARKETING BASICS. KOGAN PAGE.

Cita Chicago (17th ed.)

FREESTONE JULIE. TELEMARKETING BASICS. LONDON: KOGAN PAGE, 1989.

Cita MLA (9th ed.)

FREESTONE JULIE. TELEMARKETING BASICS. KOGAN PAGE, 1989.