Kapila D. Silva; Amita Sinha (2016). Cultural Landscapes of South Asia: Studies in Heritage Conservation and Management. Taylor & Francis. pp. 161–168. ISBN978-1-317-36592-1., Quote: "Pohela Boishakh is celebrated on the first day of Boishakh, the first month of the Bengali calendar. It falls on 14 April in the Gregorian calendar, and it coincides with similar Vedic calendar-based New Year celebrations (...)"
William D. Crump (2014). Encyclopedia of New Year's Holidays Worldwide. McFarland. p. 113114. ISBN978-0-7864-9545-0., Quote: "Naba Barsha ("New Year"). Hindu New Year festival in West Bengal State, observed on the first day of the month of Vaisakha or Baisakh (corresponds to mid-April). New Year's Day is known as Pahela Baisakh (First of Baisakh)."