Cita APA (7a ed.)

Rayfield, T. (1999). Why your direct marketing doesn't work_ and what you can do about it. Admap Publications.

Cita Chicago Style (17a ed.)

Rayfield, Tom. Why Your Direct Marketing Doesn't Work_ and What You Can Do About It. Henley-onThames: Admap Publications, 1999.

Cita MLA (9a ed.)

Rayfield, Tom. Why Your Direct Marketing Doesn't Work_ and What You Can Do About It. Admap Publications, 1999.