Citazione Stile APA (7a Edizione)

Bryant-Mole, K., Round, G., & Gee, R. (1993). Multiplying & dividing puzzles. Published in the USA by EDC Pub.].

Citazione stile Chigago Style (17a edizione)

Bryant-Mole, Karen, Graham Round, e Robyn Gee. Multiplying & Dividing Puzzles. [Tulsa, Okla: Published in the USA by EDC Pub.], 1993.

Citatione MLA (9a ed.)

Bryant-Mole, Karen, et al. Multiplying & Dividing Puzzles. Published in the USA by EDC Pub.], 1993.