Gaya APA
Manurung, H., Sudrajat, H.
(2007).
Simplified English Grammar
(
Cet.4)
.
Jakarta:
Kesaent Blanc.
Gaya MLA
Manurung, Heldin., Sudrajat, Herman.
"Simplified English Grammar".
Cet.4
Jakarta:
Kesaent Blanc,
2007.
Textbook.