APA (7th ed.) Citation

Labarca, A., González, O. G., & Rodríguez, E. A. (1998). De perlas: Intermediate Spanish. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Labarca, Angela, Olgalucía G. González, and Elmer A. Rodríguez. De Perlas: Intermediate Spanish. New York: John Wiley & Sons, 1998.

MLA (8th ed.) Citation

Labarca, Angela, et al. De Perlas: Intermediate Spanish. John Wiley & Sons, 1998.