Yardley, J. H., Morson, B. C., & Abell, M. R. (1977). The Gastrointestinal tract. Williams & Wilkins.
芝加哥风格引文Yardley, John H., Basil Clifford Morson, 与 Murray R. Abell. The Gastrointestinal Tract. Baltimore: Williams & Wilkins, 1977.
MLA引文Yardley, John H., et al. The Gastrointestinal Tract. Williams & Wilkins, 1977.
警告：这些引文格式不一定是100％准确.