APA (7e ed.) Bronvermelding

Bey, V., Concheff, B. J., & Yates, J. (2022). Spanish verb drills (Sixth edition.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Bey, Vivienne, Beatrice Jorgensen Concheff, en Jean Yates. Spanish Verb Drills. Sixth edition. New York: McGraw-Hill, 2022.

MLA (9e ed.) Bronvermelding

Bey, Vivienne, et al. Spanish Verb Drills. Sixth edition. McGraw-Hill, 2022.