Citazione Stile APA (7a Edizione)

LAY, L. C. (1967). Arithmetic: ; an introduction to mathematics. Macmillan.

Citazione stile Chigago Style (17a edizione)

LAY, L Clark. Arithmetic: ; an Introduction to Mathematics. New York: Macmillan, 1967.

Citatione MLA (9a ed.)

LAY, L Clark. Arithmetic: ; an Introduction to Mathematics. Macmillan, 1967.