Andian Ari Istiningrum, author
Sekolah Tinggi Energi dan Sumber Daya Mineral (STEM-AKAMIGAS), 2014
Artikel Jurnal
Qisthi Aditya Manshur, author
2013
UI - Skripsi Membership
Welsch, Glenn A., author
Learning System Company, 1977
Buku Teks
Artikel Jurnal
Warren, Carl S., author
South-Western College, 1999
Buku Teks