Gaya APA
ABDULLAH, M., FIRMANSYAH, M. (2013).
Diagnostic approach and management of acute abdominal pain .
Jakarta:
Interna.
Gaya MLA
ABDULLAH, Murdani., FIRMANSYAH, M.Adi.
"Diagnostic approach and management of acute abdominal pain".
Jakarta:
Interna,
2013.
Majalah.