Penggayaan APA

CHRISTENSEN, N. C.. (1972). The art of persuasion in selling . New York: Parker Publishing company.

Chicago Style

CHRISTENSEN, N. C.. The art of persuasion in selling. New York: Parker Publishing company, 1972. Buku.

MLA Style

CHRISTENSEN, N. C.. The art of persuasion in selling. New York: Parker Publishing company, 1972. Buku.

Turabian Style

CHRISTENSEN, N. C.. The art of persuasion in selling. New York: Parker Publishing company, 1972. Buku.