Maling, D. H. (1973). Coordinate systems and map projections. George Philip.
Cita Chicago (17th ed.)Maling, D. H. Coordinate Systems and Map Projections. London: George Philip, 1973.
Cita MLA (9th ed.)Maling, D. H. Coordinate Systems and Map Projections. George Philip, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.