Cita APA (7a ed.)

Vögele, S. (1992). Handbook of direct mail: The dialogue method of direct written sales communication. Prentice Hall.

Cita Chicago Style (17a ed.)

Vögele, Siegfried. Handbook of Direct Mail: The Dialogue Method of Direct Written Sales Communication. New York [etc.]: Prentice Hall, 1992.

Cita MLA (9a ed.)

Vögele, Siegfried. Handbook of Direct Mail: The Dialogue Method of Direct Written Sales Communication. Prentice Hall, 1992.