Cita APA (7th ed.)

Tapp, A. (2012). Principles of Direct and Database Marketing: A Digital Orientation (4th.). Pearson.

Cita Chicago (17th ed.)

Tapp, Alan. Principles of Direct and Database Marketing: A Digital Orientation. 4th. Noida: Pearson, 2012.

Cita MLA (9th ed.)

Tapp, Alan. Principles of Direct and Database Marketing: A Digital Orientation. 4th. Pearson, 2012.