
Letter to Dr. H. L. Gordon (May 3, 1949 - AEA 58-217) as quoted in Einstein: His Life and Universe (2007) by Walter Isaacson ISBN 9780743264730
1940s
Letter to Dr. H. L. Gordon (May 3, 1949 - AEA 58-217) as quoted in Einstein: His Life and Universe (2007) by Walter Isaacson ISBN 9780743264730
1940s
The Age of Discontinuity (1969)
1960s - 1980s
"Host: Deep into the mercenary world of take-no-prisoners political talk radio." The Atlantic, April 2005.
Essays
Venom and Eternity (1951), Danielle's Monologue
Your Job-Hunt Ltd – Advice from an Award-Winning Asian Headhunter (2003), Successful Recruitment in a Week (2012) https://books.google.ae/books?idp24GkAsgjGEC&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIGjAA#vonepage&qnigel%20cumberland&ffalse, 100 Things Successful People Do: Little Exercises for Successful Living (2016) https://books.google.ae/books?idnu0lCwAAQBAJ&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIMjAE
"Rumsfeld's Rules" January 12, 1974 http://library.villanova.edu/vbl/bweb/rumsfeldsrules.pdf
1970s
Morgan (1988) Riding the waves of change: developing managerial competencies for a turbulent world. p. 4
" Individuality Is an Illusion, https://www.theatlantic.com/family/archive/2021/02/dalai-lama-gentle-transgressive-individuality-happiness/617901/" The Atlantic (04 February 2021)