Dyfyniad APA

Stone, B. (1986). Successful direct marketing methods/3e (3rd ed.). Crain books.

Dyfyniad Arddull Chicago

Stone, Bob. Successful Direct Marketing Methods/3e. 3rd ed. Crain books, 1986.

Dyfyniad MLA

Stone, Bob. Successful Direct Marketing Methods/3e. 3rd ed. Crain books, 1986.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.