MLA

Sengar, and Ashu Singh. Eco-friendly Agro-biological Techniques for Enhancing Crop Productivity. Springer Singapore, 2018.

APA

Sengar, S., & Singh, A. (2018). Eco-friendly Agro-biological Techniques for Enhancing Crop Productivity. Springer Singapore.

Chicago

Sengar, and Ashu Singh. Eco-Friendly Agro-Biological Techniques for Enhancing Crop Productivity. : Springer Singapore, 2018.