Esler, A. (1986). The human venture: The globe encompassed. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Esler, Anthony. The Human Venture: The Globe Encompassed. New Jersey: Prentice-Hall, 1986.
Lua MLA (9ú heag.)Esler, Anthony. The Human Venture: The Globe Encompassed. Prentice-Hall, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.