Ambedkar's preamble : a secret history of the Constitution of India - Rathore, Aakash Singh (Haryana : Vintage, an imprint of Penguin Random House India, 2020)
Includes bibliographical references (pages 195-225).
Also available as an ebook.
Keywords: Ambedkar, B. R. -- 1891-1956 -- Political and social views; Preambles (Law) -- India; Constitutional law -- India