Lewis, J. P. (1965). An introduction to mathematics for student of economics. Macmillan.
Lua i Stíl Chicago (17ú heag.)Lewis, J. Parry. An Introduction to Mathematics for Student of Economics. London: Macmillan, 1965.
Lua MLA (9ú heag.)Lewis, J. Parry. An Introduction to Mathematics for Student of Economics. Macmillan, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.