APA (7th ed.) Citation

Romer, A. (1964). The discovery of radio activity and and transmutation. Dover Publications.

Chicago Style (17th ed.) Citation

Romer, Alfred. The Discovery of Radio Activity and and Transmutation. New York: Dover Publications, 1964.

MLA (9th ed.) Citation

Romer, Alfred. The Discovery of Radio Activity and and Transmutation. Dover Publications, 1964.