WAHAB, Hamdani; 						BARBAROSA, Mohammad; 						MARTIN, Awaludin.
 Coalbed Methane As a New Source of Energy in Indonesia and Some Developed Countries; A Review.
<strong>Journal of Ocean, Mechanical and Aerospace -science and engineering-</strong>, [S.l.], v. 65, n. 2, p. 40-60, july 2021.
ISSN 2527-6085.
Available at: &lt;<a href="https://isomase.org/Journals/index.php/jomase/article/view/242" target="_new">https://isomase.org/Journals/index.php/jomase/article/view/242</a>&gt;. Date accessed: 03 june 2026.
doi: <a href="http://dx.doi.org/10.36842/jomase.v65i2.242">http://dx.doi.org/10.36842/jomase.v65i2.242</a>.