Ehrat, K. S. (1993). The art of EKG interpretation: A self-instructional text (3rd.ed.). Kendall/Hunt.
芝加哥风格引文Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 3rd.ed. Dubuque: Kendall/Hunt, 1993.
MLA引文Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 3rd.ed. Kendall/Hunt, 1993.
警告：这些引文格式不一定是100％准确.