Hawkins, D. R. (2005). Transcending the levels of consciousness: The stairway to enlightenment. Hay House, Inc..
Lua i Stíl Chicago (17ú heag.)Hawkins, David R. Transcending the Levels of Consciousness: The Stairway to Enlightenment. Carlsbad, California: Hay House, Inc., 2005.
Lua MLA (9ú heag.)Hawkins, David R. Transcending the Levels of Consciousness: The Stairway to Enlightenment. Hay House, Inc., 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.