APA

Rich B., .Geometry. New york:mc graw hill,2013: .

Chicago

Rich Barnett/Thomas,Christopher, .Geometry. New york:mc graw hill,2013: .

Harvard

Rich B., .Geometry. New york:mc graw hill,2013: .

MLA

Rich Barnett/Thomas,Christopher, .New york:mc graw hill,2013: . .