APA (7 ম সংস্করণ) উদ্ধৃতি

Wilber, K., & Wilber, T. K. (2000). Grace and grit: Spirituality and healing in the life and death of Treya Killam Wilber (Second edition.). Shambhala.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Wilber, Ken, এবং Treya Killam Wilber. Grace and Grit: Spirituality and Healing in the Life and Death of Treya Killam Wilber. Second edition. Boston: Shambhala, 2000.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Wilber, Ken, এবং Treya Killam Wilber. Grace and Grit: Spirituality and Healing in the Life and Death of Treya Killam Wilber. Second edition. Shambhala, 2000.