Chamberlin, W. (1947). The round earth on flat paper: Map projections used by cartographers. By Wellman Chamberlin. With drawings by Charles E. Riddiford. Map services of the National Geographic Soc. By Gilbert Grosvenor. National Geogr. Soc.
Chicago-Zitierstil (17. Ausg.)Chamberlin, Wellman. The Round Earth on Flat Paper: Map Projections Used by Cartographers. By Wellman Chamberlin. With Drawings by Charles E. Riddiford. Map Services of the National Geographic Soc. By Gilbert Grosvenor. Washington: National Geogr. Soc, 1947.
MLA-Zitierstil (9. Ausg.)Chamberlin, Wellman. The Round Earth on Flat Paper: Map Projections Used by Cartographers. By Wellman Chamberlin. With Drawings by Charles E. Riddiford. Map Services of the National Geographic Soc. By Gilbert Grosvenor. National Geogr. Soc, 1947.