དཔྱད་གཞིའི་ཡིག་ཆ་ཁག།
Dudjom Rinpoche. 2002. The Nyingma School of Tibetan Buddhism. Translated by Gyurme Dorje and Matthew Kapstein. Boston: Wisdom Publications.
Tarthang Tulku. 1975. Bringing the Teachings Alive. Cazadero, CA: Dharma Publishing.
Roerich, George, trans. 1996. The Blue Annals. 2nd ed. Delhi: Motilal Banarsidas, pp. 175-186.