APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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