International Congress of Free Christians and Other Religious Liberals & Bowie, W. C. (1901). Liberal religious thought at the beginning of the twentieth century: Addresses and papers at the International council of Unitarian and other liberal religious thinkers and workers, held in London, May, 1901. P. Green.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInternational Congress of Free Christians and Other Religious Liberals এবং W. Copeland Bowie. Liberal Religious Thought at the Beginning of the Twentieth Century: Addresses and Papers at the International Council of Unitarian and Other Liberal Religious Thinkers and Workers, Held in London, May, 1901. London: P. Green, 1901.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিInternational Congress of Free Christians and Other Religious Liberals এবং W. Copeland Bowie. Liberal Religious Thought at the Beginning of the Twentieth Century: Addresses and Papers at the International Council of Unitarian and Other Liberal Religious Thinkers and Workers, Held in London, May, 1901. P. Green, 1901.