Cita APA (7th ed.)

Kleppner, O. (1941). Advertising procedure (3d ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Kleppner, Otto. Advertising Procedure. 3d ed. Englewood Cliffs, N. J: Prentice-Hall, 1941.

Cita MLA (9th ed.)

Kleppner, Otto. Advertising Procedure. 3d ed. Prentice-Hall, 1941.