Astuti L. T. W.; Sembiring B. B.; Perangin-angin M. I. Pengaruh Karakteristik Sosial Ekonomi Petani terhadap Penerapan Rekomendasi Pemupukan untuk Keberlanjutan Usaha Kelapa Sawit di Kecamatan Babalan: The Effect of Farmer Social Economic Characteristics on The Application of Fertilizer Recommendations for The Sustainability of The Palm Oil Farming. Jurnal Penyuluhan, v. 19, n. 02, p. 319-334, 13 Oct. 2023.