Krylov, N. (1968). Descriptive geometry. Mir pub.
Chicago Style (17th ed.) ZitazioaKrylov, N. Descriptive Geometry. Moscow: Mir pub, 1968.
MLA (9th ed.) ZitazioaKrylov, N. Descriptive Geometry. Mir pub, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.