Lua APA (7ú heag.)

Richberg, D. R. (1957). Labor union monopoly: A clear and present danger / by Donald R. Richberg (2. print.). Regnery.

Lua i Stíl Chicago (17ú heag.)

Richberg, Donald Randall. Labor Union Monopoly: A Clear and Present Danger / by Donald R. Richberg. 2. print. Chicago: Regnery, 1957.

Lua MLA (8ú heag.)

Richberg, Donald Randall. Labor Union Monopoly: A Clear and Present Danger / by Donald R. Richberg. 2. print. Regnery, 1957.

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