Citazione Stile APA (7a Edizione)

Levy, B. N., & Hubbard, . E. (1995). Graphing calculator keystroke guide to accompany the Hubbard/Robinson algebra series. D.C. Heath.

Citazione stile Chigago Style (17a edizione)

Levy, Benjamin N., e Elaine Hubbard. Graphing Calculator Keystroke Guide to Accompany the Hubbard/Robinson Algebra Series. Lexington, Mass.: D.C. Heath, 1995.

Citatione MLA (8a ed.)

Levy, Benjamin N., e Elaine Hubbard. Graphing Calculator Keystroke Guide to Accompany the Hubbard/Robinson Algebra Series. D.C. Heath, 1995.