Clapham, J. W. (1966). John Olley - pioneer missionary to the Chad. Pickering & Inglis.
芝加哥风格引文Clapham, J. W. John Olley - Pioneer Missionary to the Chad. London: Pickering & Inglis, 1966.
MLA引文Clapham, J. W. John Olley - Pioneer Missionary to the Chad. Pickering & Inglis, 1966.
警告：这些引文格式不一定是100％准确.
