Gaya APA

Engel, James F, Warshaw, Martin R. (1989). Promotional strategy : managing the marketing communications process (6e). Homewood, Illinois: Irwin.

Gaya Chicago

Engel, James F, Warshaw, Martin R. Promotional strategy : managing the marketing communications process. 6e Homewood, Illinois: Irwin, 1989. Buku.

Gaya MLA

Engel, James F, Warshaw, Martin R. Promotional strategy : managing the marketing communications process. 6e Homewood, Illinois: Irwin, 1989. Buku.

Gaya Turabian

Engel, James F, Warshaw, Martin R. Promotional strategy : managing the marketing communications process. 6e Homewood, Illinois: Irwin, 1989. Buku.