(Persero), P. P. X. (1981). PEDOMAN-PEDOMAN PELAKSANAAN PENGADAAN DAN TATANIAGA GULA TANI GILING 1981. PTP XXI-XXII.
Chicago Style (17th ed.) Citation(Persero), PT Perkebunan XXI-XXII. PEDOMAN-PEDOMAN PELAKSANAAN PENGADAAN DAN TATANIAGA GULA TANI GILING 1981. PTP XXI-XXII, 1981.
MLA (8th ed.) Citation(Persero), PT Perkebunan XXI-XXII. PEDOMAN-PEDOMAN PELAKSANAAN PENGADAAN DAN TATANIAGA GULA TANI GILING 1981. PTP XXI-XXII, 1981.
Warning: These citations may not always be 100% accurate.