ed. R.P SINGH. (1985). Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute.
Chicago-referens (17:e uppl.)ed. R.P SINGH. Directory of Central Oragnisation at Dehradun. Dehradun: Central soil & water conservation research and Training institute, 1985.
MLA-referens (9:e uppl.)ed. R.P SINGH. Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute, 1985.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.