Hawkins, D. R., & Jeffrey, S. (2011). Along the path to enlightenment: 365 daily reflections from David R. Hawkins, M.D., PH.D. Hay House.
Citazione stile Chigago Style (17a edizione)Hawkins, David R., e Scott Jeffrey. Along the Path to Enlightenment: 365 Daily Reflections from David R. Hawkins, M.D., PH.D. Carlsbad, Calif.: Hay House, 2011.
Citatione MLA (9a ed.)Hawkins, David R., e Scott Jeffrey. Along the Path to Enlightenment: 365 Daily Reflections from David R. Hawkins, M.D., PH.D. Hay House, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.