Cita APA (7th ed.)

Pfeffer, J. A. (1974). Basic spoken German grammar. Prentice Hall.

Cita Chicago (17th ed.)

Pfeffer, J. Alan. Basic Spoken German Grammar. Englewood Cliffs, New Jersey: Prentice Hall, 1974.

Cita MLA (9th ed.)

Pfeffer, J. Alan. Basic Spoken German Grammar. Prentice Hall, 1974.