APA Citation

Cunningham, H. E., & Cunningham, H. E. (1920). An Introduction to philosophy. Boston.

Chicago Style Citation

Cunningham, Holly Estil, and Holly Estil Cunningham. An Introduction to Philosophy. Boston, 1920.

MLA Citation

Cunningham, Holly Estil, and Holly Estil Cunningham. An Introduction to Philosophy. Boston, 1920.

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