Gaya APA

, ., Rao, D, B. (2011). International encyclopaedia of science and technology education volume 2 . Delhi: Delhi : Mehra pffset press 2011.

Gaya MLA

, ., Rao, Digumarti, Bhaskara. "International encyclopaedia of science and technology education volume 2". Delhi: Delhi : Mehra pffset press 2011, 2011. .