Lua APA (7ú heag.)
(1969). Our amazing world of Nature: Its marvels & mysteries. Reader's Digest Association.
Lua i Stíl Chicago (17ú heag.)
Our Amazing World of Nature: Its Marvels & Mysteries. Pleasantville, N.Y.: Reader's Digest Association, 1969.
Lua MLA (9ú heag.)
Our Amazing World of Nature: Its Marvels & Mysteries. Reader's Digest Association, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.