APA (7th ed.) Citation

Powis, R. (1985). The human body and why it works. Prentice-Hall.

Chicago Style (17th ed.) Citation

Powis, Raymond. The Human Body and Why It Works. Englewood Cliffs, New Jersey: Prentice-Hall, 1985.

MLA (9th ed.) Citation

Powis, Raymond. The Human Body and Why It Works. Prentice-Hall, 1985.