Yi ge drug paʼi rig sṅags chen moʼi sgrub thabs gser gyi ʼphreṅ baʼi chog sgrigs : a ritual method for the practice of the Avalokiteśvara mantra according to the liturgy of the ʼBrug-pa Dkar-brgyud-pa Sect - Ṅag-dbaṅ-rnam-rgyal, Źabs-druṅ I, 1594-1651 ([s.n.], 1968)