Polachek, S. W., & Siebert, W. S. (1993). The economics of earnings. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Polachek, S. W., agus W. S. Siebert. The Economics of Earnings. Cambridge ; New York: Cambridge University Press, 1993.
Lua MLA (8ú heag.)Polachek, S. W., agus W. S. Siebert. The Economics of Earnings. Cambridge University Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.