Heelas, P. Challenging secularization theory: The growth of "New Age" spriritualities of life / Paul Heelas. The Comparative Sociology of De-secularization.(2010).

Heelas, Paul. "Challenging Secularization Theory: The Growth of "New Age" Spriritualities of Life / Paul Heelas." The Comparative Sociology of De-secularization.(2010) .

Heelas, Paul. "Challenging Secularization Theory: The Growth of "New Age" Spriritualities of Life / Paul Heelas." The Comparative Sociology of De-secularization.(2010), .