Charles Manson
An Introduction to the Life of Karma Pakshi (1204/6-1283). 2009 Bulletin of Tibetology Vol. 45 No.1 NAMGYAL INSTITUTE OF TIBETOLOGY, Gangtok, Sikkim.
https://www.academia.edu/12294745/An_Introduction_to_the_Life_of_Karma_Pakshi_1204_6_1283_2009_Bulletin_of_Tibetology_Vol_45_No_1_NAMGYAL_INSTITUTE_OF_TIBETOLOGY_Gangtok_Sikkim