Cita APA (7a ed.)

Peel, J. D. Y. (1971). Herbert Spencer: The evolution of a sociologist. Heinemann.

Cita Chicago Style (17a ed.)

Peel, J. D. Y. Herbert Spencer: The Evolution of a Sociologist. London: Heinemann, 1971.

Cita MLA (9a ed.)

Peel, J. D. Y. Herbert Spencer: The Evolution of a Sociologist. Heinemann, 1971.