Gaya APA
Jurnal International Journal of Public Health Science (IJPHS)
.
(2017).
:
Universitas Ahmad Dahlan.
Gaya MLA
Jurnal International Journal of Public Health Science (IJPHS)
.
Vol.6 No. 2 Juni 2017.
:
Universitas Ahmad Dahlan,
2017.
Buku Teks.