APA (7th ed.) Citation

Hense, E., & Maas, F. (2011). Towards a theory of spirituality. Studies in spirituality.

Chicago Style (17th ed.) Citation

Hense, Elisabeth, and Frans Maas. "Towards a Theory of Spirituality." Studies in Spirituality 2011.

MLA (9th ed.) Citation

Hense, Elisabeth, and Frans Maas. "Towards a Theory of Spirituality." Studies in Spirituality, 2011.

Warning: These citations may not always be 100% accurate.