<SARIEF, E. S. Kesuburan dan pemupukan tanah pertanian. Pustaka Buana.
Chicago Style (17th ed.) Citation<SARIEF, E. Saifuddin>. Kesuburan Dan Pemupukan Tanah Pertanian. Pustaka Buana.
MLA (8th ed.) Citation<SARIEF, E. Saifuddin>. Kesuburan Dan Pemupukan Tanah Pertanian. Pustaka Buana.
Warning: These citations may not always be 100% accurate.