Bagian penelitian, P. P. I. LAPORAN TAHUNAN 1987, 1988, 1993. PTP IX.
Chicago Style (17th ed.) CitationBagian penelitian, PT Perkebunan IX. LAPORAN TAHUNAN 1987, 1988, 1993. PTP IX.
MLA (8th ed.) CitationBagian penelitian, PT Perkebunan IX. LAPORAN TAHUNAN 1987, 1988, 1993. PTP IX.
Warning: These citations may not always be 100% accurate.