Green graphics.

MLA

Eckert, Vicky, Efrén Zúñiga, and Ana Freixas. Green Graphics. Barcelona: Index , 2011.

APA

Eckert, V., Zúñiga, E., & Freixas, A. (2011). Green graphics. Barcelona: Index .

Chicago

Eckert, Vicky, Efrén Zúñiga, and Ana Freixas. Green Graphics.. Barcelona: Index, 2011.