Forstner, L. J. (1971). The everlasting universe: Readings on the ecological revolution. Heath.
Lua i Stíl Chicago (17ú heag.)Forstner, Lorne J. The Everlasting Universe: Readings on the Ecological Revolution. Lexington, Mass: Heath, 1971.
Lua MLA (9ú heag.)Forstner, Lorne J. The Everlasting Universe: Readings on the Ecological Revolution. Heath, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.