APA (7th ed.) Citation

Selsam, H. (1938). What is philosophy?: A Marxist introduction. International publishers.

Chicago Style (17th ed.) Citation

Selsam, Howard. What Is Philosophy?: A Marxist Introduction. New York: International publishers, 1938.

MLA (9th ed.) Citation

Selsam, Howard. What Is Philosophy?: A Marxist Introduction. International publishers, 1938.

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