Suwardi, F. et al. 2021. Aplikasi Pupuk Fosfor terhadap Pertumbuhan, Hasil Biji, dan Gula Brix Tanaman Sorgum. Agriprima : Journal of Applied Agricultural Sciences. 5, 1 (Mar. 2021), 8–17. DOI:https://doi.org/10.25047/agriprima.v5i1.372.