APA
Eckert Vicky & Zuniga Efren, . (2011). Green Graphics. : Index Books,Spain.
Chicago
Eckert Vicky & Zuniga Efren, . 2011. Green Graphics. : Index Books,Spain.
Harvard
Eckert Vicky & Zuniga Efren, . (2011). Green Graphics. : Index Books,Spain.
MLA
Eckert Vicky & Zuniga Efren, . Green Graphics. : Index Books,Spain. 2011.
