1. Azis, A., Bakar, B. A., & Darwis. (2011). Kajian Fosfat dan Pupuk Kandang terhadap Pertumbuhan dan Produksi Kacang Tanah. In Prosiding Seminar Hasil Penelitian tanaman Aneka kacang dan Umbi (pp. 527-534). Malang, Indonesia: Balitkabi.
2. Balai Penelitian Tanah. (2005). Petunjuk Teknis Analisis Kimia Tanah, Tanaman, Air dan Pupuk. Bogor, Indonesia: Balai Penelitian Tanah.
3. Black, C. A. (1965). Methods of Soil Analysis. Part 2. Agronomy 9. Madison. Wisconsin, USA: American Society of Agronomy, Soil Science Society of America.
4. BPS. (2015). Produktivitas Kacang Tanah Menurut Provinsi (kuintal/ha), 1993-2015. Retrieved February 23, 2017, from https://www.bps.go.id/dynamictable/2015/09/09/875/produktivitas-kacang-tanah-menurut-provinsi-kuintal-ha-1993-2015.html
5. Çalifikan, S., Çalifikan, M. E., & Arslan, M. (2008). Genotypic Differences for Reproductive Growth, Yield, and Yield Components in Groundnut (Arachis hypogaea L.). Turkish Journal of Agriculture and Forestry, 32(5), 415-424.