MLA

Society, Baptist Missionary. Twelfth Annual Report of the Calcutta Baptist Missionary Society. Baptist Mission Press, 1831. https://collections.library.yale.edu/catalog/16035449.

APA, 6th edition

Society, B. M. (1831). Twelfth Annual Report of the Calcutta Baptist Missionary Society. Baptist Mission Press. https://collections.library.yale.edu/catalog/16035449.