Allen, C. L. (1970). Roads to radiant living. Fleming H. Revell.
Lua i Stíl Chicago (17ú heag.)Allen, Charles L. Roads to Radiant Living. Fleming H. Revell, 1970.
Lua MLA (9ú heag.)Allen, Charles L. Roads to Radiant Living. Fleming H. Revell, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.