Thakur, V. (2012). A text book of environmental science. Scientific Publishers.
Citazione stile Chigago Style (17a edizione)Thakur, Vidya. A Text Book of Environmental Science. Jodhpur: Scientific Publishers, 2012.
Citatione MLA (9a ed.)Thakur, Vidya. A Text Book of Environmental Science. Scientific Publishers, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.