Cita APA

Pous, D., & Pous, D. (2003). Blue planet: Level 3 : English through science (1. edition.). México, Distrito Federal: McGraw-Hill.

Citación estilo Chicago

Pous, Dinorah, y Dinorah Pous. Blue Planet: Level 3 : English Through Science. 1. edition. México, Distrito Federal: McGraw-Hill, 2003.

Cita MLA

Pous, Dinorah, y Dinorah Pous. Blue Planet: Level 3 : English Through Science. 1. edition. México, Distrito Federal: McGraw-Hill, 2003.