Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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