Chhatwal, G. (1994). Encyclopaedic history of science and technology.: History of Biology. Anmol publications.
Citazione stile Chigago Style (17a edizione)Chhatwal, G.R. Encyclopaedic History of Science and Technology.: History of Biology. New Delhi: Anmol publications, 1994.
Citatione MLA (9a ed.)Chhatwal, G.R. Encyclopaedic History of Science and Technology.: History of Biology. Anmol publications, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.