Lua APA (7ú heag.)

Helfgott, R. B. (1974). Labor economics ([1st ed.].). Random House.

Lua i Stíl Chicago (17ú heag.)

Helfgott, Roy B. Labor Economics. [1st ed.]. New York: Random House, 1974.

Lua MLA (8ú heag.)

Helfgott, Roy B. Labor Economics. [1st ed.]. Random House, 1974.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.