Robertson, W. (2023). The empire forestry handbook. Forest Research Institute.
Chicago-čujuhus (17. p.)Robertson, W.A. The Empire Forestry Handbook. Forest Research Institute, 2023.
MLA-čujuhus (9. p.)Robertson, W.A. The Empire Forestry Handbook. Forest Research Institute, 2023.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.