APA (7th ed.) Citation

Pennington, M. B. (1982). Centering prayer: : renewing an ancient Christian prayer form. Image Books.

Chicago Style (17th ed.) Citation

Pennington, M. Basil. Centering Prayer: : Renewing an Ancient Christian Prayer Form. Garden City, N.Y.: Image Books, 1982.

MLA (9th ed.) Citation

Pennington, M. Basil. Centering Prayer: : Renewing an Ancient Christian Prayer Form. Image Books, 1982.