APA (7th ed.) Citation

Katritzky, A. R. (1968). The principles of heterocyclic chemistry. Academic Press.

Chicago Style (17th ed.) Citation

Katritzky, Alan R. The Principles of Heterocyclic Chemistry. New York: Academic Press, 1968.

MLA (9th ed.) Citation

Katritzky, Alan R. The Principles of Heterocyclic Chemistry. Academic Press, 1968.