Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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