ed. R.P SINGH. (1985). Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute.
Chicago (17e ed.) Bronvermeldinged. R.P SINGH. Directory of Central Oragnisation at Dehradun. Dehradun: Central soil & water conservation research and Training institute, 1985.
MLA (9e ed.) Bronvermeldinged. R.P SINGH. Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute, 1985.
Let op: Deze citaties zijn niet altijd 100% accuraat.