Gaya APA

suprapto, S. et al (1991). The Effect Of Gas Emissions From Coal Fired Power Generations And Cement Industries On The Environment In Indonesia, Case Histories From Jawa Island . Bandung: Directorate Of Mineral Resources.

Gaya MLA

suprapto, Slamet. et al. "The Effect Of Gas Emissions From Coal Fired Power Generations And Cement Industries On The Environment In Indonesia, Case Histories From Jawa Island". Bandung: Directorate Of Mineral Resources, 1991. Batubara.