Dyfyniad APA

Lewis, J. P. (1965). An introduction to mathematics for student of economics. Macmillan.

Dyfyniad Arddull Chicago

Lewis, J. Parry. An Introduction to Mathematics for Student of Economics. London: Macmillan, 1965.

Dyfyniad MLA

Lewis, J. Parry. An Introduction to Mathematics for Student of Economics. Macmillan, 1965.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.