LUBIS, R. E. Buku pintar kelapa sawit. Agromedia Pustaka.
Chicago Style (17th ed.) CitationLUBIS, RUSTAM EFENDI. Buku Pintar Kelapa Sawit. Agromedia Pustaka.
MLA (8th ed.) CitationLUBIS, RUSTAM EFENDI. Buku Pintar Kelapa Sawit. Agromedia Pustaka.
Warning: These citations may not always be 100% accurate.