Gaya APA
HEASLEY, B., Sihotang, D, P. (2005).
English for Communication : an Integratied Course of English (Cet. 1).
Jakarta:
Erlangga.
Gaya MLA
HEASLEY, Brendan., Sihotang, Dion, P..
"English for Communication : an Integratied Course of English".
Cet. 1
Jakarta:
Erlangga,
2005.
Text.