参考书目
Achard Jean-Luc. 2007.Les Instructions sur le A Primordial —Volume I : Histoire de la Lignée, Sumène: Editions Khyung-Lung, pp. 33-39.
Kvaerne, Per. 1973. "Bonpo Studies I: The A-khrid System of Meditation."KailsahI, no. 1: 1-50.
Shar rdza bkra shis rgyal mtshan. 1990.Man ngag rin po che a khrid kyi bla ma brgyud pa'i rnam thar padma dkar po'i phreng ba ces bya ba. InShar rdza bka' 'bum, vol. 13, pp. 1-90. Chamdo.