Cita APA (7a ed.)

Tönnies, F., Cahnman, W. J., & Heberle, R. (1971). On sociology: Pure, applied, and empirical : selected writings. University of Chicago Press.

Cita Chicago Style (17a ed.)

Tönnies, Ferdinand, Werner J. Cahnman, y Rudolf Heberle. On Sociology: Pure, Applied, and Empirical : Selected Writings. Chicago [etc.]: University of Chicago Press, 1971.

Cita MLA (9a ed.)

Tönnies, Ferdinand, et al. On Sociology: Pure, Applied, and Empirical : Selected Writings. University of Chicago Press, 1971.