APA (7th ed.) Citation

Heasley, B., Maskur, & Aji, P. (1996). English in use for SMU. Erlangga.

Chicago Style (17th ed.) Citation

Heasley, Brendan, Maskur, and Paulan Aji. English in Use for SMU. Erlangga, 1996.

MLA (8th ed.) Citation

Heasley, Brendan, et al. English in Use for SMU. Erlangga, 1996.