Kellaway, G. P. (1949). Map projections. Methuen.
Chicago Style (17th ed.) ZitazioaKellaway, George P. Map Projections. London: Methuen, 1949.
MLA (9th ed.) ZitazioaKellaway, George P. Map Projections. Methuen, 1949.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.