Sabaratnam , A. (1991). Uterine activity in labour /Sabaratnam Arulkumaran.
芝加哥风格引文Sabaratnam , Arulkumaran. Uterine Activity in Labour /Sabaratnam Arulkumaran. 1991.
MLA引文Sabaratnam , Arulkumaran. Uterine Activity in Labour /Sabaratnam Arulkumaran. 1991.
警告：这些引文格式不一定是100％准确.