Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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