Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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