APA (7th ed.) Citation

Keller, G. D., Sebastiani, N. A., & Jiménez, F. (1978). Spanish here and now. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Citation

Keller, Gary D., Nancy A. Sebastiani, and Francisco Jiménez. Spanish Here and Now. New York u.a: Harcourt Brace Jovanovich, 1978.

MLA (9th ed.) Citation

Keller, Gary D., et al. Spanish Here and Now. Harcourt Brace Jovanovich, 1978.