Chapman, David L. (1994). Sandow the Magnificent: Eugen Sandow and the Beginnings of Bodybuilding. Sport and society. University of Illinois Press. p. 6. ISBN978-0-252-02033-9. OCLC538245261. Retrieved 27 January 2019. "Adam hints at the quarrel by reporting that Sandow's parents at first wanted their son to become a Lutheran minister, but later relented when it became obvious that he had no inclinations in that field."
Chapman, David L. (1994). Sandow the Magnificent: Eugen Sandow and the Beginnings of Bodybuilding. Sport and society. University of Illinois Press. p. 6. ISBN978-0-252-02033-9. OCLC538245261. Retrieved 27 January 2019. "Adam hints at the quarrel by reporting that Sandow's parents at first wanted their son to become a Lutheran minister, but later relented when it became obvious that he had no inclinations in that field."
Waller, David (2011). The perfect man : the muscular life and times of Eugen Sandow, Victorian strongman. Brighton: Victorian Secrets Limited. p. 200. ISBN978-1-906469-25-2. OCLC774635051.