Cita APA (7th ed.)

Lewis, J. P. (1969). An introduction to mathematics for students of economics. Macmillan.

Cita Chicago (17th ed.)

Lewis, John Parry. An Introduction to Mathematics for Students of Economics. London: Macmillan, 1969.

Cita MLA (9th ed.)

Lewis, John Parry. An Introduction to Mathematics for Students of Economics. Macmillan, 1969.