Summerall, C. P. (1985). Lessons in EKG interpretation: A basic self-instruction guide. John Wiley and Sons.
Chicago-referens (17:e uppl.)Summerall, Charles P. Lessons in EKG Interpretation: A Basic Self-instruction Guide. John Wiley and Sons, 1985.
MLA-referens (9:e uppl.)Summerall, Charles P. Lessons in EKG Interpretation: A Basic Self-instruction Guide. John Wiley and Sons, 1985.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.