ISBN 0-923891-09-9* Jettmar, Karl (1985) Religions of the Hindu Kush ISBN 0-85668-163-6* J. P. Mallory, "In Search of the Indo-Europeans: Language, Archaeology and Myth", Thames and Hudson, 1989.
* Jettmar, Karl (1985) Religions of the Hindu Kush ISBN 0-85668-163-6* James P. Mallory, "In Search of the Indo-Europeans: Language, Archaeology and Myth", Thames and Hudson, 1989.