Caplovitz, D. (1963). The poor pay more: Consumer practices of low-income families. Free Press of Glencoe.
Lua i Stíl Chicago (17ú heag.)Caplovitz, David. The Poor Pay More: Consumer Practices of Low-income Families. [New York]: Free Press of Glencoe, 1963.
Lua MLA (9ú heag.)Caplovitz, David. The Poor Pay More: Consumer Practices of Low-income Families. Free Press of Glencoe, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.