APA (7th ed.) Citation

U.S. Foreign Service Institute, Boyle, E. L., & Delbridge, P. N. (1970). Cantonese: Basic course. D. C.

Chicago Style (17th ed.) Citation

U.S. Foreign Service Institute, Elizabeth Latimore Boyle, and Pauline Ng Delbridge. Cantonese: Basic Course. Washington: D. C, 1970.

MLA (9th ed.) Citation

U.S. Foreign Service Institute, et al. Cantonese: Basic Course. D. C, 1970.