APA (7th ed.) Citation

Sagan, C., & Albornoz, R. (1989). Contacto. Plaza & Janés.

Chicago Style (17th ed.) Citation

Sagan, Carl, and Raquel Albornoz. Contacto. Barcelona: Plaza & Janés, 1989.

MLA (9th ed.) Citation

Sagan, Carl, and Raquel Albornoz. Contacto. Plaza & Janés, 1989.

Warning: These citations may not always be 100% accurate.