APA Edition Citation

Backman, C. A., & Carl A. Backman; Cromie, R. G. (1971). Introduction to concepts of geometry. Prentice-Hall.

Chicago Edition Citation

Backman, Carl A., and Robert G. Carl A. Backman; Cromie. Introduction to Concepts of Geometry. Englewood Cliffs, N.J.: Prentice-Hall, 1971.

MLA Edition Citation

Backman, Carl A., and Robert G. Carl A. Backman; Cromie. Introduction to Concepts of Geometry. Prentice-Hall, 1971.