Παραπομπή σε μορφή APA (7η εκδ.)

STONE BOB. (1986). SUCESSFUL TELEMARKETING OPPORTUNITIES & TECH: FOR INCREASING SALES AND ? N T C BUSINESS BOOKS.

Παραπομπή σε μορφή Chicago (17η εκδ.)

STONE BOB. SUCESSFUL TELEMARKETING OPPORTUNITIES & TECH: FOR INCREASING SALES AND ? ILLNOIS U.S.A: N T C BUSINESS BOOKS, 1986.

Παραπομπή σε μορφή MLA (9th εκδ.)

STONE BOB. SUCESSFUL TELEMARKETING OPPORTUNITIES & TECH: FOR INCREASING SALES AND ? N T C BUSINESS BOOKS, 1986.