Gaya APA
Herrera, Mario, Pinkley, Diane. (2006).
Backpack 1 : British English .
London:
Pearson Educational Limited.
Gaya Chicago
Herrera, Mario, Pinkley, Diane.
Backpack 1 : British English.
London:
Pearson Educational Limited,
2006.
Text.
Gaya MLA
Herrera, Mario, Pinkley, Diane.
Backpack 1 : British English.
London:
Pearson Educational Limited,
2006.
Text.
Gaya Turabian
Herrera, Mario, Pinkley, Diane.
Backpack 1 : British English.
London:
Pearson Educational Limited,
2006.
Print.