Citazione APA

Ray, S., & Ray, A. K. (2007). Biodiversity and biotechnology (2nd ed.). New central book agency.

Stile di citazione Chicago

Ray, Samit, e Arun K. Ray. Biodiversity and Biotechnology. 2nd ed. Kolkata: New central book agency, 2007.

Citazione MLA

Ray, Samit, e Arun K. Ray. Biodiversity and Biotechnology. 2nd ed. New central book agency, 2007.