Roger R. Jackson (editor, translator) & Sarahapāda, Kṛṣṇavajrapāda, Roger R. Jackson, Tillopāda (authors) (). Tantric Treasures: Three Collections of Mystical Verse from Buddhist India. Oxford University Press.p. 59. ISBN0-19-516641-8, ISBN978-0-19-516641-5 Source: [2] (accessed: Sunday March 7, 2010)