Cita APA (7th ed.)

Ehrat, K. S. (1993). The art of EKG interpretation: A self-instructional text (3rd.ed.). Kendall/Hunt.

Cita Chicago (17th ed.)

Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 3rd.ed. Dubuque: Kendall/Hunt, 1993.

Cita MLA (9th ed.)

Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 3rd.ed. Kendall/Hunt, 1993.