APA (7th ed.) Citation

Asimov, I., Silverberg, R., & Santos, D. Anochecer.

Chicago Style (17th ed.) Citation

Asimov, Isaac, Robert Silverberg, and Domingo Santos. Anochecer. Barcelona.

MLA (9th ed.) Citation

Asimov, Isaac, et al. Anochecer.

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