APA (7th ed.) Citation

Carnap, R., & Gardner, M. (1995). An introduction to the philosophy of science. Dover Publications.

Chicago Style (17th ed.) Citation

Carnap, Rudolf, and Martin Gardner. An Introduction to the Philosophy of Science. New York: Dover Publications, 1995.

MLA (8th ed.) Citation

Carnap, Rudolf, and Martin Gardner. An Introduction to the Philosophy of Science. Dover Publications, 1995.

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