Alexander Gardner, "Lama Ngawang Drakpa," Treasury of Lives, accessed April 05, 2025, http://treasuryoflives.org/biographies/view/Lama-Ngawang-Drakpa/9788.
The TBRC RID number refers to the unique ID assigned by the Tibetan Buddhist Resource Center (TBRC.org) to each historical figure in their database of Tibetan literature.