APA

Foreign Service Institute U.S, Boyle E. L. & Delbridge P. N. (1970). Cantonese: basic course. Washington: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Chicago

Foreign Service Institute U.S, Boyle Elizabeth Latimore and Delbridge Pauline Ng. 1970. Cantonese: basic course. Washington: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Harvard

Foreign Service Institute U.S, Boyle E. L. and Delbridge P. N. (1970). Cantonese: basic course. Washington: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.].

MLA

Foreign Service Institute U.S, Boyle Elizabeth Latimore and Delbridge Pauline Ng. Cantonese: basic course. Washington: [For sale by the Supt. of Docs., U.S. Govt. Print. Off.]. 1970.