APA (7th ed.) Citation

Babcock, J. C., & Trevino, S. N. (1944). Introduction to Spanish. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Babcock, James Chester, and Salomon Narciso Trevino. Introduction to Spanish. [Boston]: Houghton Mifflin, 1944.

MLA (9th ed.) Citation

Babcock, James Chester, and Salomon Narciso Trevino. Introduction to Spanish. Houghton Mifflin, 1944.