APA Style
Purwasih, R, A. (2012).
Textbook evaluation of Backpack 4 by Mario Herrera and Diane Pinkley .
Jakarta:
STBA LIA.
MLA Style
Purwasih, Ratna, Ayu.
"Textbook evaluation of Backpack 4 by Mario Herrera and Diane Pinkley".
Jakarta:
STBA LIA,
2012.
Skripsi.