APA Style
Gunawan, H. et al (2018).
The Indonesian Journal of Internal Medicine Volume 50 Number 4 .
Jakarta:
Acta Medica Indonesiana.
MLA Style
Gunawan, Hendra. et al.
"The Indonesian Journal of Internal Medicine Volume 50 Number 4".
Jakarta:
Acta Medica Indonesiana,
2018.
Jurnal.