APA (7th ed.) Citation

Hampton, J. R. (2013). 150 ECG problems (4. ed.). Churchill Livingstone/Elsevier.

Chicago Style (17th ed.) Citation

Hampton, John R. 150 ECG Problems. 4. ed. Edinburgh [u.a.]: Churchill Livingstone/Elsevier, 2013.

MLA (9th ed.) Citation

Hampton, John R. 150 ECG Problems. 4. ed. Churchill Livingstone/Elsevier, 2013.