Gaya APA
Thachir, A., Sugeng, B. (2007).
Let's Make Friends With English: For Elementary School Grade Four .
Jakarta:
Erlangga.
Gaya MLA
Thachir, A.Malik., Sugeng, Bambang.
"Let's Make Friends With English: For Elementary School Grade Four".
Jakarta:
Erlangga,
2007.
Text.