McDowall, S. A. (1915). Evolution and spiritual life. The University press.
Lua i Stíl Chicago (17ú heag.)McDowall, Stewart Andrew. Evolution and Spiritual Life. Cambridge: The University press, 1915.
Lua MLA (8ú heag.)McDowall, Stewart Andrew. Evolution and Spiritual Life. The University press, 1915.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.