Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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