APA (7th ed.) Citation

HORNBY, A., & PARNWELL, E. (1972). Learner's dictionary: Oxford progressive english. Indira.

Chicago Style (17th ed.) Citation

HORNBY, A.S, and E.C PARNWELL. Learner's Dictionary: Oxford Progressive English. Jakarta: Indira, 1972.

MLA (9th ed.) Citation

HORNBY, A.S, and E.C PARNWELL. Learner's Dictionary: Oxford Progressive English. Indira, 1972.