Cita APA

Discovery Channel School, Quick Time, & World Book. (2004). Cells [computer file]. Discovery Communications, Inc.

Citación estilo Chicago

Discovery Channel School, Quick Time, and World Book. Cells [computer File]. [U.S.A.]: Discovery Communications, Inc, 2004.

Cita MLA

Discovery Channel School, et al. Cells [computer File]. Discovery Communications, Inc, 2004.