P. Amani, D. Adriani, M. A. Putri, Y. Imran, I. Rachmiyani, and N. Hairunisa, “Sociodemographic Factors and Nutritional Knowledge Impacts on Overall Vitamin B12 Intake in Older Women”, Open Access Maced J Med Sci, vol. 11, no. E, pp. 265–270, Mar. 2023.