Husain Majid. (2023). Paryavaran Evam Paristhithiki for Civil Services Examination (6th ed.). G.K. Publications.
Chicago-referens (17:e uppl.)Husain Majid. Paryavaran Evam Paristhithiki for Civil Services Examination. 6th ed. Faridabad: G.K. Publications, 2023.
MLA-referens (9:e uppl.)Husain Majid. Paryavaran Evam Paristhithiki for Civil Services Examination. 6th ed. G.K. Publications, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.