Hall, D. W., & Szabo, S. (1971). Plane geometry, an approach through isometries. Prentice-Hall.
Dyfyniad Arddull ChicagoHall, Dick Wick, and Steven Szabo. Plane Geometry, an Approach Through Isometries. Englewood Cliffs, N.J.: Prentice-Hall, 1971.
Dyfyniad MLAHall, Dick Wick, and Steven Szabo. Plane Geometry, an Approach Through Isometries. Prentice-Hall, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.