Gaya APA
Herrera, Mario, Pinkley, Diane. (2005).
Backpack 1 : Workbook .
USA:
Pearson Longman.
Gaya Chicago
Herrera, Mario, Pinkley, Diane.
Backpack 1 : Workbook.
USA:
Pearson Longman,
2005.
Text, Picture.
Gaya MLA
Herrera, Mario, Pinkley, Diane.
Backpack 1 : Workbook.
USA:
Pearson Longman,
2005.
Text, Picture.
Gaya Turabian
Herrera, Mario, Pinkley, Diane.
Backpack 1 : Workbook.
USA:
Pearson Longman,
2005.
Text, Picture.