Richard A. Lertzman, William J. Birnes: Dr. Feelgood: The Shocking Story of the Doctor Who May Have Changed History by Treating and Drugging JFK, Marilyn, Elvis, and Other Prominent Figures. Simon and Schuster, 2013, ISBN 978-1-62636-335-9 (google.de [abgerufen am 14. Mai 2020]).
Richard A. Lertzman, William J. Birnes: Dr. Feelgood: The Shocking Story of the Doctor Who May Have Changed History by Treating and Drugging JFK, Marilyn, Elvis, and Other Prominent Figures. Simon and Schuster, 2013, ISBN 978-1-62636-335-9 (google.de [abgerufen am 14. Mai 2020]).
Christopher Smith, Special to the Los Angeles Times: The rise and fall of dinner theater. 7. Januar 2011, abgerufen am 8. November 2023 (amerikanisches Englisch).