Gaya APA

A.P.Aggarwal, ., Aggarwal, B, S. (2002). A handbook of practical biology for class XII . New Delhi: S.Chand r Company LTD.

Gaya MLA

A.P.Aggarwal, ., Aggarwal, B., S.. "A handbook of practical biology for class XII". New Delhi: S.Chand r Company LTD, 2002. Text.