APA (7e ed.) Bronvermelding

Keedy, M. L., & Nelson, C. W. (1973). Geometry: A modern introduction (2a. ed.). Addison-Wesley.

Chicago (17e ed.) Bronvermelding

Keedy, Mervin L., en Charles W. Nelson. Geometry: A Modern Introduction. 2a. ed. Reading: Addison-Wesley, 1973.

MLA (9e ed.) Bronvermelding

Keedy, Mervin L., en Charles W. Nelson. Geometry: A Modern Introduction. 2a. ed. Addison-Wesley, 1973.