Law, W. (1977). A serious call to a devout and holy life. Baker Book House.
Lua i Stíl Chicago (17ú heag.)Law, William. A Serious Call to a Devout and Holy Life. Grand Rapids: Baker Book House, 1977.
Lua MLA (9ú heag.)Law, William. A Serious Call to a Devout and Holy Life. Baker Book House, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.