Cita APA (7a ed.)

Carthy, J. D., & Duddington, C. L. (1965). Viewpoints in biology 4. Butterworths.

Cita Chicago Style (17a ed.)

Carthy, J. D., y C. L. Duddington. Viewpoints in Biology 4. London: Butterworths, 1965.

Cita MLA (8a ed.)

Carthy, J. D., y C. L. Duddington. Viewpoints in Biology 4. Butterworths, 1965.