APA (7e ed.) Bronvermelding

Purpel, D. E. (1989). The moral & spiritual crisis in education: A curriculum for justice and compassion in education. Bergin & Garvey.

Chicago (17e ed.) Bronvermelding

Purpel, David E. The Moral & Spiritual Crisis in Education: A Curriculum for Justice and Compassion in Education. Granby, Mass: Bergin & Garvey, 1989.

MLA (9e ed.) Bronvermelding

Purpel, David E. The Moral & Spiritual Crisis in Education: A Curriculum for Justice and Compassion in Education. Bergin & Garvey, 1989.