Unknown. (2023). Progress Report of the Northern Forest Rangers College, Dehradun for the year 1956-57. Forest Research Institute, Dehradun.
Chicago-čujuhus (17. p.)Unknown. Progress Report of the Northern Forest Rangers College, Dehradun for the Year 1956-57. Forest Research Institute, Dehradun, 2023.
MLA-čujuhus (9. p.)Unknown. Progress Report of the Northern Forest Rangers College, Dehradun for the Year 1956-57. Forest Research Institute, Dehradun, 2023.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.