APA (7e ed.) Bronvermelding

Gilbert, G. T., Krusemeyer, M. I., & Larson, L. C. (1993). The Wohascum county problem book. The Mathematical Association of America.

Chicago (17e ed.) Bronvermelding

Gilbert, George Thomas, Mark I. Krusemeyer, en Loren C. Larson. The Wohascum County Problem Book. Washington, D.C: The Mathematical Association of America, 1993.

MLA (9e ed.) Bronvermelding

Gilbert, George Thomas, et al. The Wohascum County Problem Book. The Mathematical Association of America, 1993.