Snyder, J.P.; Voxland, P.M. (1989). „An album of map projections”. Album of Map Projections(PDF). U.S. Geological Survey Professional Paper. 1453. United States Government Printing Office. doi:10.3133/pp1453. Приступљено 8. 3. 2022.CS1 одржавање: Формат датума (веза)
Langbein, W.B.; Iseri, Kathleen T. (1995). „Hydrologic Definitions: Stream”. Manual of Hydrology: Part 1. General Surface-Water Techniques (Water Supply Paper 1541-A). Reston, VA: USGS..
pubs.usgs.gov
Snyder, J.P.; Voxland, P.M. (1989). „An album of map projections”. Album of Map Projections(PDF). U.S. Geological Survey Professional Paper. 1453. United States Government Printing Office. doi:10.3133/pp1453. Приступљено 8. 3. 2022.CS1 одржавање: Формат датума (веза)