Keay, John (2000). India: A history. Atlantic Monthly Press. էջ 151–152. ISBN978-0-87113-800-2. «Kalidasa wrote ... with an excellence which, by unanimous consent, justifies the inevitable comparisons with Shakespeare ... When and where Kalidasa lived remains a mystery. He acknowledges no links with the Guptas; he may not even have coincided with them ... but the poet's vivid awareness of the terrain of the entire subcontinent argues strongly for a Guptan provenance.»
Keay, John (2000). India: A history. Atlantic Monthly Press. էջ 132. ISBN978-0-87113-800-2. «The great era of all that is deemed classical in Indian literature, art and science was now dawning. It was this crescendo of creativity and scholarship, as much as ... political achievements of the Guptas, which would make their age so golden .»
