A Review On Colorimetric Method For Quantification Of Vitamin B12. International Journal of Environmental Sciences, [S. l.], p. 2156–2166, 2025. DOI: 10.64252/nm1fwb05. Disponível em: https://theaspd.com/index.php/ijes/article/view/4714.. Acesso em: 9 oct. 2025.