Cullen, S., & Chapman, R. (2003). Primary sclerosing cholangitis.
芝加哥风格引文Cullen, S., 与 R. Chapman. Primary Sclerosing Cholangitis. 2003.
MLA引文Cullen, S., 与 R. Chapman. Primary Sclerosing Cholangitis. 2003.
警告：这些引文格式不一定是100％准确.
APA引文