Erwood, W. J. (1910). The rational life: Being a book of essays on vital themes. Will J. Erwood company.
Lua i Stíl Chicago (17ú heag.)Erwood, William Joseph. The Rational Life: Being a Book of Essays on Vital Themes. Baltimore, Md.: Will J. Erwood company, 1910.
Lua MLA (8ú heag.)Erwood, William Joseph. The Rational Life: Being a Book of Essays on Vital Themes. Will J. Erwood company, 1910.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.