References Plant Cultures - picture details Archived 2007-11-13 at the Wayback Machine. K P Sagreiya : Forests and Forestry, National Book Trust, India, 2005, ISBN 81-237-1126-3, p.4 K P Sagreiya : Forests and Forestry, National Book Trust, India, 2005, ISBN 81-237-1126-3, pp.4-5 S G Joshi, Medicinal Plants, Oxford & IBH Publishing Co. Pvt. Ltd. New Delhi, 2004, ISBN 81-204-1414-4, p.xi Agni Purana 108.1-2 Matsya Purana 121-122 D.S. Chauhan in Radhakrishna , B.P. and Merh , S.S. (editors): Vedic Sarasvati , 1999, p.35-44 Pancavimsa Brahmana , Jaiminiya Upanisad Brahmana , Katyayana Srauta Sutra, Latyayana Srauta ; Macdonell and Keith 1912 Asvalayana Srauta Sutra, Sankhayana Srauta Sutra; Macdonell and Keith 1912, II:55 O. Thompson, A History of Ancient Geography, London 1965 Bhagavad Gita (5.20.3-42) The Puranas : Vishnu Purana