Snapper, E., & Troyer, R. J. (1971). Metric affine geometry. Academic Press.
Chicago Style (17th ed.) ZitazioaSnapper, Ernst, eta Robert J. Troyer. Metric Affine Geometry. Nueva York: Academic Press, 1971.
MLA (9th ed.) ZitazioaSnapper, Ernst, eta Robert J. Troyer. Metric Affine Geometry. Academic Press, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.