Purpel, D. E., & McLaurin, W. M. (2004). Reflections on The moral & spiritual crisis in education. P. Lang.
Čikaški stil citiranja (17. izdanje)Purpel, David E., i William M. McLaurin. Reflections on The Moral & Spiritual Crisis in Education. New York, NY: P. Lang, 2004.
MLA način citiranja (9. izdanje)Purpel, David E., i William M. McLaurin. Reflections on The Moral & Spiritual Crisis in Education. P. Lang, 2004.
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