APA (7th ed.) Citation

English Language Services, Inc. (Los Angeles, Calif.). (1964). English 900. Macmillan.

Chicago Style (17th ed.) Citation

English Language Services, Inc. (Los Angeles, Calif.). English 900. New York ; London: Macmillan, 1964.

MLA (9th ed.) Citation

English Language Services, Inc. (Los Angeles, Calif.). English 900. Macmillan, 1964.