APA (7th ed.) Citation

Knorre, M., Dorwick, T., & Glass, W. R. Puntos de partida, an invitation to spanish.

Chicago Style (17th ed.) Citation

Knorre, Marty, Thalia Dorwick, and William R. Glass. Puntos De Partida, an Invitation to Spanish.

MLA (8th ed.) Citation

Knorre, Marty, et al. Puntos De Partida, an Invitation to Spanish.