Hill, N. (1977). Success through positive mental attitude. Pocket book.
Lua i Stíl Chicago (17ú heag.)Hill, Napoleon. Success Through Positive Mental Attitude. New York: Pocket book, 1977.
Lua MLA (9ú heag.)Hill, Napoleon. Success Through Positive Mental Attitude. Pocket book, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.