APA (7e ed.) Bronvermelding

Keedy, M. L., Bittinger, M. L., & Beecher, J. A. (1993). Developmental mathematics (3rd ed.). Addison-Wesley.

Chicago (17e ed.) Bronvermelding

Keedy, Mervin Laverne, Marvin L. Bittinger, en Judith A. Beecher. Developmental Mathematics. 3rd ed. Reading, Mass: Addison-Wesley, 1993.

MLA (9e ed.) Bronvermelding

Keedy, Mervin Laverne, et al. Developmental Mathematics. 3rd ed. Addison-Wesley, 1993.