Dyfyniad APA

Herrera, M., & Mario Herrera; Diane Pinkley. (2005). Backpack. Harlow: Pearson Education, cop.

Dyfyniad Arddull Chicago

Herrera, Mario, và Mario Herrera; Diane Pinkley. Backpack. Harlow: Pearson Education, cop, 2005.

Dyfyniad MLA

Herrera, Mario, và Mario Herrera; Diane Pinkley. Backpack. Harlow: Pearson Education, cop, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.