APA (7th ed.) Citation

Cisneros, I., Messenger, A. M., & Rodriguez-Saona, R. (1998). Latin American Spanish in three months. Hugo's Language Books.

Chicago Style (17th ed.) Citation

Cisneros, Isabel, Ana Marie Messenger, and Roberto Rodriguez-Saona. Latin American Spanish in Three Months. London: Hugo's Language Books, 1998.

MLA (8th ed.) Citation

Cisneros, Isabel, et al. Latin American Spanish in Three Months. Hugo's Language Books, 1998.