APA (7th ed.) Citation

Hempel, C. G. (1972). Fundamentals of concept formation in empirical science (11. impr.). Univ. of Chicago Press.

Chicago Style (17th ed.) Citation

Hempel, Carl Gustav. Fundamentals of Concept Formation in Empirical Science. 11. impr. Chicago [u.a.]: Univ. of Chicago Press, 1972.

MLA (9th ed.) Citation

Hempel, Carl Gustav. Fundamentals of Concept Formation in Empirical Science. 11. impr. Univ. of Chicago Press, 1972.