KOWSURAT, S.; PHOLLOKE, P.; KONG-IN, S.; MANEEKAO, S.; CHUEKITTISAK, T. Ubonratchathani Black Grain Cowpea. Thai Agricultural Research Journal, [S. l.], v. 24, n. 1, p. 52, 2006. DOI: 10.14456/thaidoa-agres.2006.5. Disponível em: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/102257. Acesso em: 2 oct. 2026.