Spivak, John L. (1939). "Ch. III. Secret Armies, the new tactics of Nazi warfare". France's Secret Fascist Army. New York: Modern Age Books. p. 31. Archived from the original on 27 June 2009. Retrieved 28 May 2008.
Finley-Croswhite, Annette; Brunelle, Gayle K. (Winter 2006). "Murder in the Metro". Quest. 9 (1). Old Dominion University. Archived from the original on 30 May 2014.
Finley-Croswhite, Annette; Brunelle, Gayle K. (Winter 2006). "Murder in the Metro". Quest. 9 (1). Old Dominion University. Archived from the original on 30 May 2014.
Spivak, John L. (1939). "Ch. III. Secret Armies, the new tactics of Nazi warfare". France's Secret Fascist Army. New York: Modern Age Books. p. 31. Archived from the original on 27 June 2009. Retrieved 28 May 2008.