Gaya APA
Goldschlager, N., Goldman, M, J. (1989).
1989 Principles of Clinical Electrocardiography (13th ed).
California:
Appleton \r Lange.
Gaya MLA
Goldschlager, Nora., Goldman, Mervin, J.
"1989 Principles of Clinical Electrocardiography".
13th ed
California:
Appleton \r Lange,
1989.
print.