Dyfyniad APA

Orlik, P. B. (1990). Broadcast/cable copywriting (4th ed.). Allyn and Bacon.

Dyfyniad Arddull Chicago

Orlik, Peter B. Broadcast/cable Copywriting. 4th ed. Boston: Allyn and Bacon, 1990.

Dyfyniad MLA

Orlik, Peter B. Broadcast/cable Copywriting. 4th ed. Allyn and Bacon, 1990.

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