Aitken, R. (1981). "The Cloud of Unknowing" and the "Mumonkan": Christian and Buddhist Meditation Methods. Buddhist Christian studies, 1, 87-91. doi:10.2307/1390104
Chicago-Zitierstil (17. Ausg.)Aitken, Robert. ""The Cloud of Unknowing" and the "Mumonkan": Christian and Buddhist Meditation Methods." Buddhist Christian Studies 1 (1981): 87-91, https://doi.org/10.2307/1390104.
MLA-Zitierstil (8. Ausg.)Aitken, Robert. ""The Cloud of Unknowing" and the "Mumonkan": Christian and Buddhist Meditation Methods." Buddhist Christian Studies, vol. 1, 1981, pp. 87-91, https://doi.org/10.2307/1390104.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.