APA

Katritzky A. R., . (2009). The Principles of Heterocyclic Chemisty. New Delhi: PharmaMed Press/BSP Books.

Chicago

Katritzky Alan R, . 2009. The Principles of Heterocyclic Chemisty. New Delhi: PharmaMed Press/BSP Books.

Harvard

Katritzky A. R., . (2009). The Principles of Heterocyclic Chemisty. New Delhi: PharmaMed Press/BSP Books.

MLA

Katritzky Alan R, . The Principles of Heterocyclic Chemisty. New Delhi: PharmaMed Press/BSP Books. 2009.