Cita APA (7th ed.)

Vogele, S. (1992). HANDBOOK of direct mail: The dialogue method of direct written sales communication / Siegfried Vogele. Verlag Moderne Industrie/Prentice Hall.

Cita Chicago (17th ed.)

Vogele, Siegfried. HANDBOOK of Direct Mail: The Dialogue Method of Direct Written Sales Communication / Siegfried Vogele. New York: Verlag Moderne Industrie/Prentice Hall, 1992.

Cita MLA (9th ed.)

Vogele, Siegfried. HANDBOOK of Direct Mail: The Dialogue Method of Direct Written Sales Communication / Siegfried Vogele. Verlag Moderne Industrie/Prentice Hall, 1992.