Citazione Stile APA (7a Edizione)

WALKER, R. (2005). Under the microscope the human body volume 1 heart: How the blood gets around the body. Grolier Educational.

Citazione stile Chigago Style (17a edizione)

WALKER, Richard. Under the Microscope the Human Body Volume 1 Heart: How the Blood Gets Around the Body. Danbury: Grolier Educational, 2005.

Citatione MLA (9a ed.)

WALKER, Richard. Under the Microscope the Human Body Volume 1 Heart: How the Blood Gets Around the Body. Grolier Educational, 2005.