"Gray, R. (1925). Builders of modern India: Mahatma : an essay in appreciation. Association press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Gray, R.M.;Parekh. Builders of Modern India: Mahatma : An Essay in Appreciation. Association press, 1925.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Gray, R.M.;Parekh. Builders of Modern India: Mahatma : An Essay in Appreciation. Association press, 1925.
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