Lipsey, R. G. (1984). Economics (7ª ed.). Harper and Row.
Lua i Stíl Chicago (17ú heag.)Lipsey, Richard G. Economics. 7ª ed. Harper and Row, 1984.
Lua MLA (9ú heag.)Lipsey, Richard G. Economics. 7ª ed. Harper and Row, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.