Grautoff, S. (2020). REVERT the diagnosis - Modified Valsalva manoeuvre as a method to differentiate supraventricular tachycardia from atrial flutter. The American Journal of Emergency Medicine. https://doi.org/10.1016/j.ajem.2020.05.105
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Grautoff, Steffen. "REVERT the Diagnosis - Modified Valsalva Manoeuvre as a Method to Differentiate Supraventricular Tachycardia from Atrial Flutter." The American Journal of Emergency Medicine 2020. https://doi.org/10.1016/j.ajem.2020.05.105.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Grautoff, Steffen. "REVERT the Diagnosis - Modified Valsalva Manoeuvre as a Method to Differentiate Supraventricular Tachycardia from Atrial Flutter." The American Journal of Emergency Medicine, 2020, https://doi.org/10.1016/j.ajem.2020.05.105.