Cita APA (7a ed.)

Vail, V. H., Sparks, K., & Huber, T. (1978). Modern German (2. ed.). Harcourt Brace Jovanovich.

Cita Chicago Style (17a ed.)

Vail, Van H., Kimberly Sparks, y Thomas Huber. Modern German. 2. ed. New York [u. a.]: Harcourt Brace Jovanovich, 1978.

Cita MLA (9a ed.)

Vail, Van H., et al. Modern German. 2. ed. Harcourt Brace Jovanovich, 1978.