Petre, M. D. M. (1904). The soul's orbit: Or, Man's journey to God. Longman's, Green.
Lua i Stíl Chicago (17ú heag.)Petre, Maude Dominica Mary. The Soul's Orbit: Or, Man's Journey to God. London ; New York: Longman's, Green, 1904.
Lua MLA (8ú heag.)Petre, Maude Dominica Mary. The Soul's Orbit: Or, Man's Journey to God. Longman's, Green, 1904.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.