Cita APA (7th ed.)
Rowlands, A., & Sargent, A. (2008). The ECG workbook. M&K Update Ltd..
Cita Chicago (17th ed.)
Rowlands, Angela, i Andrew Sargent. The ECG Workbook. Cumbria [England]: M&K Update Ltd., 2008.
Cita MLA (9th ed.)
Rowlands, Angela, i Andrew Sargent. The ECG Workbook. M&K Update Ltd., 2008.
Atenció: Aquestes cites poden no estar 100% correctes.