Donald, I. (1979). Practical obstetric problems (5th ed.). Lloyd-Luke (Medical Books).
芝加哥风格引文Donald, Ian. Practical Obstetric Problems. 5th ed. London: Lloyd-Luke (Medical Books), 1979.
MLA引文Donald, Ian. Practical Obstetric Problems. 5th ed. Lloyd-Luke (Medical Books), 1979.
警告：这些引文格式不一定是100％准确.