Cita APA (7th ed.)

Roberts-Phelps, G. (2004). The concise guide to telephone tactics. Thorogood.

Cita Chicago (17th ed.)

Roberts-Phelps, Graham. The Concise Guide to Telephone Tactics. London: Thorogood, 2004.

Cita MLA (9th ed.)

Roberts-Phelps, Graham. The Concise Guide to Telephone Tactics. Thorogood, 2004.