APA (7th ed.) Citation

House, R. E., & Mapes, E. K. (1932). The essentials of spanish grammar. Ginn.

Chicago Style (17th ed.) Citation

House, Ralph E., and Erwin K. Mapes. The Essentials of Spanish Grammar. Boston u.a: Ginn, 1932.

MLA (9th ed.) Citation

House, Ralph E., and Erwin K. Mapes. The Essentials of Spanish Grammar. Ginn, 1932.

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