Cita APA (7th ed.)

Harm, W. (1980). Biological effects of ultraviolet radiation. Cambridge University.

Cita Chicago (17th ed.)

Harm, Walter. Biological Effects of Ultraviolet Radiation. Cambridge: Cambridge University, 1980.

Cita MLA (9th ed.)

Harm, Walter. Biological Effects of Ultraviolet Radiation. Cambridge University, 1980.