Alaexander, D. C. (1999). Elementary geometry for college students (2nd ed.). Houghton Mifflin.
Dyfyniad Arddull ChicagoAlaexander, Daniel C. Elementary Geometry for College Students. 2nd ed. Boston, MA: Houghton Mifflin, 1999.
Dyfyniad MLAAlaexander, Daniel C. Elementary Geometry for College Students. 2nd ed. Houghton Mifflin, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.