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.

International Congress of Free Christians and Other Religious Liberals and 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.

International Congress of Free Christians and Other Religious Liberals and 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.