Cederberg, J. N. A Course in Modern Geometries. Springer International Publishing.
Style de citation Chicago (17e éd.)Cederberg, Judith N. A Course in Modern Geometries. Cham: Springer International Publishing.
Style de citation MLA (8e éd.)Cederberg, Judith N. A Course in Modern Geometries. Springer International Publishing.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.