"The Shape of Ancient Thought. Comparative studies in Greek and Indian Philosophies" by Thomas McEvilley (Allworth Press and the School of Visual Arts, 2002) ISBN 1-58115-203-5
"Buddhism in Central Asia" by B.N. Puri (Motilal Banarsidass Pub, ngày 1 tháng 1 năm 2000) ISBN 81-208-0372-8
"The Greeks in Bactria and India", W.W. Tarn, Cambridge University Press.
Los Angeles County Museum of Art, Pratapaditya Pal, Indian Sculpture: Circa 500 B.C.-A.D. 700, University of California Press, 1987.
