APA Citation

Kropotkin, P. A., & Huxley, T. H. 1. (1955). Mutual aid,a factor of evolution. Boston: Extending Horizons Books.

Chicago Style Citation

Kropotkin, Petr Alekseevich, and Thomas Henry( 1825-1895) Huxley. Mutual Aid,a Factor of Evolution. Boston: Extending Horizons Books, 1955.

MLA Citation

Kropotkin, Petr Alekseevich, and Thomas Henry( 1825-1895) Huxley. Mutual Aid,a Factor of Evolution. Boston: Extending Horizons Books, 1955.

Warning: These citations may not always be 100% accurate.