Cita APA (7a ed.)

McGraw-Hill Companies. McGraw-Hill School Division. National Geographic Society (U.S.). Educational Services & Moyer, R. Human body: Keeping healthy (Macmillan/McGraw-Hill edition.).

Cita Chicago Style (17a ed.)

McGraw-Hill Companies. McGraw-Hill School Division. National Geographic Society (U.S.). Educational Services y Richard Moyer. Human Body: Keeping Healthy. Macmillan/McGraw-Hill edition.

Cita MLA (8a ed.)

McGraw-Hill Companies. McGraw-Hill School Division. National Geographic Society (U.S.). Educational Services y Richard Moyer. Human Body: Keeping Healthy. Macmillan/McGraw-Hill edition.