Não informado. (1999). Holistic Education Review. Holistic Education Press.
Chicago-referens (17:e uppl.)Não informado. Holistic Education Review. Brandon, Vt: Holistic Education Press, 1999.
MLA-referens (8:e uppl.)Não informado. Holistic Education Review. Holistic Education Press, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.