APA (7th ed.) Citation

Madrigal, M., & Madrigal, E. (1970). An invitation to Spanish. Simon and Schuster.

Chicago Style (17th ed.) Citation

Madrigal, Margarita, and Ezequías Madrigal. An Invitation to Spanish. New York: Simon and Schuster, 1970.

MLA (9th ed.) Citation

Madrigal, Margarita, and Ezequías Madrigal. An Invitation to Spanish. Simon and Schuster, 1970.