Heibroner, R. (1968). Understanding macro economics (2nd.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Heibroner, Robert. Understanding Macro Economics. 2nd. New Jersey: Prentice Hall, 1968.
Lua MLA (9ú heag.)Heibroner, Robert. Understanding Macro Economics. 2nd. Prentice Hall, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.