Sembiring, Ronni, 		Setiyo, Yohanes, AND 		Sumiyati, Sumiyati.
" Pengaruh Pemberian Kompos pada Budidaya Tanaman Kacang Tunggak Terhadap Erodibilitas Tanah" <em>Jurnal BETA (Biosistem dan Teknik Pertanian)</em> [Online], Volume 1 Number 1 (1 February 2013)