Company, Johnson Publishing (5 Feb 1970). Jet (بالإنجليزية). Johnson Publishing Company. p. 54. Archived from the original on 2019-04-27. Retrieved 2017-06-16.
Company, Johnson Publishing (5 Feb 1970). Jet (بالإنجليزية). Johnson Publishing Company. p. 54. Archived from the original on 2019-04-27. Retrieved 2017-06-16.