1 Zaehner, R. C., "The Teaching of Magi" George Allen and Unwin Ltd 1956
2 Frye, Richard N., "The Heritage of Persia" The Guernsey Press 1962
3 Fang, Thome H., "The Chinese View of Life: The Philosophy of Comprehensive Harmony" Union Press 1957
4 Mojtabaii, Fath-allah., "Shahr-e Zibai-ye Aflatun va Shahi-ye Armani-ye Iran" Anjoman-e Farhang-e Bastan 1975
5 Jalali, Mohammad Reza., "Rig-Veda" Nashr Noqre 1992
6 Foltz, Richard., "Religions of the Silk Road" Palgrave Macmillan 2010
7 Curzon, Lord, "Persian and The Persian Question" Longman 1892
8 Widengren, Geo, "Mani and Manichaeism" Weidenfeld and Nicholson 1965
9 Frankfort, Henri., "Kingship and the God" University of Chicago Press 1969
10 Duchesne-Guillemin, Jacques., "Encyclopaedia Iranica Vol. 1" Routledge & Kegan Paul 670-673, 1982
1 Zaehner, R. C., "The Teaching of Magi" George Allen and Unwin Ltd 1956
2 Frye, Richard N., "The Heritage of Persia" The Guernsey Press 1962
3 Fang, Thome H., "The Chinese View of Life: The Philosophy of Comprehensive Harmony" Union Press 1957
4 Mojtabaii, Fath-allah., "Shahr-e Zibai-ye Aflatun va Shahi-ye Armani-ye Iran" Anjoman-e Farhang-e Bastan 1975
5 Jalali, Mohammad Reza., "Rig-Veda" Nashr Noqre 1992
6 Foltz, Richard., "Religions of the Silk Road" Palgrave Macmillan 2010
7 Curzon, Lord, "Persian and The Persian Question" Longman 1892
8 Widengren, Geo, "Mani and Manichaeism" Weidenfeld and Nicholson 1965
9 Frankfort, Henri., "Kingship and the God" University of Chicago Press 1969
10 Duchesne-Guillemin, Jacques., "Encyclopaedia Iranica Vol. 1" Routledge & Kegan Paul 670-673, 1982
11 Frankfort, Henri, "Before Philosophy" Pelican Book 1960
12 Shaygan, Dariush, "Adyan va Maktabha-ye Falsafi-ye Hend" Amir Kabir 1978
13 Fung, Yu-Lan., "A History of Chinese Philosophy, Vol 1: The Period of Philosophers" Princeton University Press 1983