Charles Sturt (1834). “Two expeditions into the interior of southern Australia during ... 1828, 1829, 1830 and 1831: with observations on New South Wales”, p.58
Dr. Robert C. Worstell, Dorothea Brande, Claude M. Bristol, Earl Nightingale, Napoleon Hill (2017). “Mindset StackingTM Inspirational Journal VolumeSS01”, p.148, Lulu.com
William Shakespeare (2013). “Histories of Shakespeare in Plain and Simple English (a Modern Translation and the Original Version)”, p.117, BookCaps Study Guides