Gaya APA

WILLSMER, Ray L.. (1975). Directing the marketing effort . London: Pan Books.

Gaya Chicago

WILLSMER, Ray L.. Directing the marketing effort. London: Pan Books, 1975. Text.

Gaya MLA

WILLSMER, Ray L.. Directing the marketing effort. London: Pan Books, 1975. Text.

Gaya Turabian

WILLSMER, Ray L.. Directing the marketing effort. London: Pan Books, 1975. Print.