Gordon, L. j., & Lee, S. M. (1977). Economics for consumers (7th ed.). Divan Nostrand.
Lua i Stíl Chicago (17ú heag.)Gordon, Leland j., agus Stewart M. Lee. Economics for Consumers. 7th ed. New York: Divan Nostrand, 1977.
Lua MLA (9ú heag.)Gordon, Leland j., agus Stewart M. Lee. Economics for Consumers. 7th ed. Divan Nostrand, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.