Singh, S. (2018). Biogeography. Pravalika publications.
Cita Chicago Style (17a ed.)Singh, Savindra. Biogeography. Allahbad, India: Pravalika publications, 2018.
Cita MLA (9a ed.)Singh, Savindra. Biogeography. Pravalika publications, 2018.
Precaución: Estas citas no son 100% exactas.