APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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