Lua APA (7ú heag.)

Heilbroner, R. L. (1972). The worldly philosophers (4th ed.). A Touchstone Book.

Lua i Stíl Chicago (17ú heag.)

Heilbroner, Robert L. The Worldly Philosophers. 4th ed. New York: A Touchstone Book, 1972.

Lua MLA (9ú heag.)

Heilbroner, Robert L. The Worldly Philosophers. 4th ed. A Touchstone Book, 1972.

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