Singh, D. V. (1998). Impact evaluation study, Integrated Watershed Development (Hills) Project, Markanda Watershed, Himachal Pradesh. Agro-Economic Research Centre, Himachal Pradesh University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Singh, D. V. Impact Evaluation Study, Integrated Watershed Development (Hills) Project, Markanda Watershed, Himachal Pradesh. Shimla, India: Agro-Economic Research Centre, Himachal Pradesh University, 1998.
Παραπομπή σε μορφή MLA (8th εκδ.)Singh, D. V. Impact Evaluation Study, Integrated Watershed Development (Hills) Project, Markanda Watershed, Himachal Pradesh. Agro-Economic Research Centre, Himachal Pradesh University, 1998.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.