APA Style

Suspi Migas IX/1989 International Energy Seminar : Pengembangan Industri Petrokimia di Indonesia, 26 June-8 July 1989. (1989). Iran: Penerbit Alfabeta.

MLA Style

Suspi Migas IX/1989 International Energy Seminar : Pengembangan Industri Petrokimia di Indonesia, 26 June-8 July 1989. . Iran: Penerbit Alfabeta, 1989. Text.