Gaya APA

Resources, D, O, E, A, M. (2003). In the perspective of economics recovery; energy and mineral resources year book . : Yayasan Pertambangan dan Energi.

Gaya MLA

Resources, DEPARTMENT, Of, Energy, And, Mineral. "In the perspective of economics recovery; energy and mineral resources year book". : Yayasan Pertambangan dan Energi, 2003. Buku.