Citazione Stile APA (7a Edizione)

VERMA, P., & AGARWAL, V. (1998). Concept of Evolution. Chand and Company Ltd..

Citazione stile Chigago Style (17a edizione)

VERMA, P.S, e V.K AGARWAL. Concept of Evolution. New Delhi: Chand and Company Ltd., 1998.

Citatione MLA (9a ed.)

VERMA, P.S, e V.K AGARWAL. Concept of Evolution. Chand and Company Ltd., 1998.