APA (7th ed.) Citation

Sprague, E. (1961). What is philosophy?: A short introduction (7. print.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Sprague, Elmer. What Is Philosophy?: A Short Introduction. 7. print. New York: Oxford Univ. Press, 1961.

MLA (9th ed.) Citation

Sprague, Elmer. What Is Philosophy?: A Short Introduction. 7. print. Oxford Univ. Press, 1961.