Business Quotes - Page 108
Regis McKenna (1985). “The Regis touch: million-dollar advice from America's top marketing consultant”, Addison Wesley Publishing Company
"Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, p. 85-87, Poenulus, I. 2. 1, 1922.
Peter F. Drucker (2014). “The Peter Drucker Collection on Managing in Turbulent Times: Management: Revised Edition, Management Challenges for the 21st Century, Managing in Turbulent Times, and The Practice of Management”, p.65, Harper Collins
"Fictional character: Arthur Jensen". "Network", 1976.
P. T. Barnum (1999). “Art of Money Getting”, p.91, Applewood Books
Oscar Wilde (2015). “Essays and Lectures: Top Essays”, p.75, 谷月社
Oscar Wilde, General Press (2016). “The Complete Works of Oscar Wilde: Novel, Short Stories, Poetry, Essays and Plays”, p.664, GENERAL PRESS
Oliver Goldsmith (1871). “The works of Oliver Goldsmith: Vicar of Wakefield, select poems and comedies, with intr., notes and a life by J.F. Waller”, p.209