Endrass et al. 2011, p. 81. Endrass, Jérôme; Rossegger, Astrid; Urbaniok, Frank; Laubacher, Arja; Pierce, Christine Schnyder; Moskvitin, Konstantin (2011). "Procedures for preventing juvenile violence in Switzerland: The Zurich model". New Directions for Youth Development. 2011 (129): 79–87. doi:10.1002/yd.388. ISSN1537-5781.
Endrass et al. 2011, p. 82. Endrass, Jérôme; Rossegger, Astrid; Urbaniok, Frank; Laubacher, Arja; Pierce, Christine Schnyder; Moskvitin, Konstantin (2011). "Procedures for preventing juvenile violence in Switzerland: The Zurich model". New Directions for Youth Development. 2011 (129): 79–87. doi:10.1002/yd.388. ISSN1537-5781.
Endrass et al. 2011, p. 81. Endrass, Jérôme; Rossegger, Astrid; Urbaniok, Frank; Laubacher, Arja; Pierce, Christine Schnyder; Moskvitin, Konstantin (2011). "Procedures for preventing juvenile violence in Switzerland: The Zurich model". New Directions for Youth Development. 2011 (129): 79–87. doi:10.1002/yd.388. ISSN1537-5781.
Endrass et al. 2011, p. 82. Endrass, Jérôme; Rossegger, Astrid; Urbaniok, Frank; Laubacher, Arja; Pierce, Christine Schnyder; Moskvitin, Konstantin (2011). "Procedures for preventing juvenile violence in Switzerland: The Zurich model". New Directions for Youth Development. 2011 (129): 79–87. doi:10.1002/yd.388. ISSN1537-5781.