Rosyad, Astryani, et al. “Plant Growth, Nitrogen Content, Nitrogen Uptake, and Seed Quality in Six Bambara Groundnut (Vigna Subterranea (L.) Verdc) Landraces”. Journal of Tropical Crop Science, vol. 12, no. 03, Oct. 2025, pp. 572-83, doi:10.29244/jtcs.12.03.572-583.