APA (7th ed.) Citation

Hempel, C. G. (1966). Philosophy of natural science (9. print.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Hempel, Carl Gustav. Philosophy of Natural Science. 9. print. Englewood Cliffs, NJ: Prentice-Hall, 1966.

MLA (9th ed.) Citation

Hempel, Carl Gustav. Philosophy of Natural Science. 9. print. Prentice-Hall, 1966.