Wayne W. Dyer (2009). “Your Erroneous Zones: Step-by-Step Advice for Escaping the Trap of Negative Thinking and Taking Control of Your Life”, p.32, Harper Collins
Zachary Taylor, Smith PYNE (1850). “Obituary Addresses delivered on the occasion of the death of Z. Taylor ... in the Senate and House of Representatives ... with the funeral Semon by the Rev. S. Pyne, etc”, p.8
Wayne W. Dyer (2009). “Your Erroneous Zones: Step-by-Step Advice for Escaping the Trap of Negative Thinking and Taking Control of Your Life”, p.32, Harper Collins