توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Riekkinen, H. (1971). Frank, cube and tetrahedron VCG and conventional ECG in ventricular overload: Correlations between selected QRS amplitude measurements and hemodynamic parameters.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Riekkinen, Heikki. Frank, Cube and Tetrahedron VCG and Conventional ECG in Ventricular Overload: Correlations Between Selected QRS Amplitude Measurements and Hemodynamic Parameters. Helsinki, 1971.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Riekkinen, Heikki. Frank, Cube and Tetrahedron VCG and Conventional ECG in Ventricular Overload: Correlations Between Selected QRS Amplitude Measurements and Hemodynamic Parameters. 1971.