Wallace, E. C., & West, S. F. (1992). Roads to geometry. Prentice Hall, Inc.
Chicago Style aipamenaWallace, Edward C., and Stephen F. West. Roads to Geometry. Englewood Cliffs, New Jersey: Prentice Hall, Inc, 1992.
MLA aipamenaWallace, Edward C., and Stephen F. West. Roads to Geometry. Prentice Hall, Inc, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.