Johnson, r. (2001). Skills for midwifery practice. Churchill Livingstone.
芝加哥风格引文Johnson, ruth. Skills for Midwifery Practice. Churchill Livingstone, 2001.
MLA引文Johnson, ruth. Skills for Midwifery Practice. Churchill Livingstone, 2001.
警告：这些引文格式不一定是100％准确.