MLA

Akhtar, Mohd. Sayeed Akhtar, and Mallappa Kumara Swamy. Natural Bio-active Compounds. Springer Singapore, 2019.

APA

Akhtar, A., Akhtar, M. Sayeed, & Swamy, M. Kumara. (2019). Natural Bio-active Compounds. Springer Singapore.

Chicago

Akhtar, Mohd. Sayeed Akhtar, and Mallappa Kumara Swamy. Natural Bio-Active Compounds. : Springer Singapore, 2019.