APA (7th ed.) Citation

Arnold, G. (1987). Batubara ; seri energi masa kini. Pradnya Paramita.

Chicago Style (17th ed.) Citation

Arnold, Guy. Batubara ; Seri Energi Masa Kini. Pradnya Paramita, 1987.

MLA (8th ed.) Citation

Arnold, Guy. Batubara ; Seri Energi Masa Kini. Pradnya Paramita, 1987.

Warning: These citations may not always be 100% accurate.