Lua APA (7ú heag.)
Weber, T. P., & Shelley, B. L. (1978). The future explored. Victor Books.
Lua i Stíl Chicago (17ú heag.)
Weber, Timothy P., agus Bruce L. Shelley. The Future Explored. Wheaton, Ill.: Victor Books, 1978.
Lua MLA (9ú heag.)
Weber, Timothy P., agus Bruce L. Shelley. The Future Explored. Victor Books, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.