Gaya APA

Heasley, B., Sihotang, D, P. (1999). English for Communication for SLTP Year 2 [1994 Curiculum] (Cet. 2.--). Jakarta: Erlangga.

Gaya MLA

Heasley, Brendan., Sihotang, Dion, P.. "English for Communication for SLTP Year 2 [1994 Curiculum]". Cet. 2.-- Jakarta: Erlangga, 1999. Text.