MONIRUZZAMAN, M. Effects of Plant Spacing and Mulching on Yield and Profitability of Lettuce (<i>Lactuca sativa</i> L.). Journal of Agriculture & Rural Development, [S. l.], v. 4, n. 1, p. 107–111, 2008. DOI: 10.3329/jard.v4i1.776. Disponível em: https://www.banglajol.info/index.php/JARD/article/view/776. Acesso em: 11 oct. 2025.