Gaya APA
Suwarna, N. (2019).
Indonesian Journal On Geoscience : Vol. 6 No. 1, April 2019 .
Bandung:
Indonesian Journal on Geocience.
Gaya MLA
Suwarna, Nana.
"Indonesian Journal On Geoscience : Vol. 6 No. 1, April 2019".
Bandung:
Indonesian Journal on Geocience,
2019.
Text.