Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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