APA (7th ed.) Citation

Hempel, C. G. (1969). Fundamentals of concept formation in empirical science. University Press.

Chicago Style (17th ed.) Citation

Hempel, Carl G. Fundamentals of Concept Formation in Empirical Science. Chicago: University Press, 1969.

MLA (9th ed.) Citation

Hempel, Carl G. Fundamentals of Concept Formation in Empirical Science. University Press, 1969.

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