Gaya APA
Herrera, M., Pinkley, D.
(2009).
BACKPACK 5 Second Edition
(
1)
.
Amerika:
Pearson Longman.
Gaya MLA
Herrera, Mario., Pinkley, Diane.
"BACKPACK 5 Second Edition".
1
Amerika:
Pearson Longman,
2009.
Text.