SpringerLink (Online service), Awang, M., Negash, B. M., Md Akhir, N. A., & Lubis, L. A. (2015). ICIPEG 2014: Proceedings of the International Conference on Integrated Petroleum Engineering and Geosciences. Springer Singapore : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Mariyamni Awang, Berihun Mamo Negash, Nur Asyraf Md Akhir, και Luluan Almanna Lubis. ICIPEG 2014: Proceedings of the International Conference on Integrated Petroleum Engineering and Geosciences. Singapore: Springer Singapore : Imprint: Springer, 2015.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. ICIPEG 2014: Proceedings of the International Conference on Integrated Petroleum Engineering and Geosciences. Springer Singapore : Imprint: Springer, 2015.
