Epstein, R., & Butler, A. D. (1958). Selections in economics. Smith, Keynes & Marshall.
Lua i Stíl Chicago (17ú heag.)Epstein, Ralph, agus Arthur D. Butler. Selections in Economics. Buffalo: Smith, Keynes & Marshall, 1958.
Lua MLA (9ú heag.)Epstein, Ralph, agus Arthur D. Butler. Selections in Economics. Smith, Keynes & Marshall, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.