APA
Purohit S. S. S. Q. j. . A. A. k., Shammi Q .j . Agarwal A .k, . (2012). A Textbook Of Environmental Sciences. jodhpur: student edition.
Chicago
Purohit S S Shammi Q j Agarwal A k, Shammi Q .j . Agarwal A .k, . 2012. A Textbook Of Environmental Sciences. jodhpur: student edition.
Harvard
Purohit S. S. S. Q. j. . A. A. k., Shammi Q .j . Agarwal A .k, . (2012). A Textbook Of Environmental Sciences. jodhpur: student edition.
MLA
Purohit S S Shammi Q j Agarwal A k, Shammi Q .j . Agarwal A .k, . A Textbook Of Environmental Sciences. jodhpur: student edition. 2012.