Gaya APA
Sugeng, B. (2003).
Let's Make Friends with English 4 : Program Semester (Cetakan ke - 1 , 2003).
Jakarta:
Esis.
Gaya MLA
Sugeng, Bambang.
"Let's Make Friends with English 4 : Program Semester".
Cetakan ke - 1 , 2003
Jakarta:
Esis,
2003.
Text.