ebrary, Inc, & Davis-Floyd, R. (2009). Birth models that work. University of California Press.
芝加哥风格引文ebrary, Inc, 与 Robbie Davis-Floyd. Birth Models That Work. Berkeley: University of California Press, 2009.
MLA引文ebrary, Inc, 与 Robbie Davis-Floyd. Birth Models That Work. University of California Press, 2009.
警告：这些引文格式不一定是100％准确.