International perspectives: Polish post-secondary vocational schools and Canadian community colleges: a comparison using an information technology conceptual model / Norman L. BUTLER, Barry S. Davidson, Ryszard Pachociński, Kimberly G. Griffith, William A. Kritsonis // W: Social context of education [Dokument elektroniczny] / eds. Damijan Štefanc, Bożena Harasimowicz. — Wersja do Windows. — Dane tekstowe. — Ljubljana : Univerza v Ljubljani. Filozofska fakulteta, cop. 2009. — e-ISBN: 978-961-237-337-5. — S. 159–170. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://www.slideshare.net/Will1945/dr-william-allan-kritsonis-social-context-of-education-university-of-ljubljana-2009 [2011-05-23]. — Bibliogr. s. 169, Abstr.

Polish post-secondary schools and Canadian community colleges : a comparative study / Norman L. BUTLER. — [Germany] : LAP Lambert Academic Publishing, 2009. — 200 s.. — ISBN: 978-3-8383-0841-8

Primary and secondary education in Canada and Poland-compared: international implications / Teresa A. Hughes, Norman L. BUTLER, William A. Kritsonis, David Herrington // W: Social context of education [Dokument elektroniczny] / eds. Damijan Štefanc, Bożena Harasimowicz. — Wersja do Windows. — Dane tekstowe. — Ljubljana : Univerza v Ljubljani. Filozofska fakulteta, cop. 2009. — e-ISBN: 978-961-237-337-5. — S. 135–141. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://www.slideshare.net/Will1945/dr-william-allan-kritsonis-social-context-of-education-university-of-ljubljana-2009 [2011-05-23]. — Bibliogr. s. 139–140, Abstr.

Publications (2007–2008): Polish education / Norman L. BUTLER. — [Germany] : Lap Lambert Academic Publishing, 2009. — 176 s.