Cita APA (7th ed.)

Ehrat, K. S. (1997). The art of EKG interpretation: A self-instructional text (4th ed.). Kendall/Hunt.

Cita Chicago (17th ed.)

Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 4th ed. Dubuque,Iowa: Kendall/Hunt, 1997.

Cita MLA (9th ed.)

Ehrat, Karen S. The Art of EKG Interpretation: A Self-instructional Text. 4th ed. Kendall/Hunt, 1997.