APA (7th ed.) Citation
Duncan, C., Bruno, C. J., & Rice, M. P. (1995). Learn to speak Spanish: The complete interactive course. Hyperglot Software Co..
Chicago Style (17th ed.) Citation
Duncan, Cynthia, Charles J. Bruno, and Martin P. Rice. Learn to Speak Spanish: The Complete Interactive Course. Knoxville, TN: Hyperglot Software Co., 1995.
MLA (9th ed.) Citation
Duncan, Cynthia, et al. Learn to Speak Spanish: The Complete Interactive Course. Hyperglot Software Co., 1995.
Warning: These citations may not always be 100% accurate.