Gaya APA
Proceedings 1991 PORIM international palm oil conference: 9 - 14 September 1991. (1993).
Anak Hebat Indonesia:
Media tera.
Gaya MLA
Proceedings 1991 PORIM international palm oil conference: 9 - 14 September 1991.
21st Century.
Anak Hebat Indonesia:
Media tera,
1993.
Text.