Penggayaan APA
HELFANT, Richard H.. (1980).
Bellet's essentials of cardiac arrhythmias (2rd ed.).
Philadelphia:
W.B. Saunders Company.
Chicago Style
HELFANT, Richard H..
Bellet's essentials of cardiac arrhythmias.
2rd ed.
Philadelphia:
W.B. Saunders Company,
1980.
Buku.
MLA Style
HELFANT, Richard H..
Bellet's essentials of cardiac arrhythmias.
2rd ed.
Philadelphia:
W.B. Saunders Company,
1980.
Buku.
Turabian Style
HELFANT, Richard H..
Bellet's essentials of cardiac arrhythmias.
2rd ed.
Philadelphia:
W.B. Saunders Company,
1980.
Buku.