Gudmundsdottir, S., Hrafnkelsson, H., Sigurdsson, E., & Johannsson, E. (2020). Serum 25-hydroxyvitamin D concentrations in 16-year-old Icelandic adolescent and its association with bone mineral density. Public Health Nutr.
استشهاد بنمط شيكاغوGudmundsdottir, SL, H. Hrafnkelsson, EL Sigurdsson, و E. Johannsson. "Serum 25-hydroxyvitamin D Concentrations in 16-year-old Icelandic Adolescent and Its Association With Bone Mineral Density." Public Health Nutr 2020.
MLA استشهادGudmundsdottir, SL, H. Hrafnkelsson, EL Sigurdsson, و E. Johannsson. "Serum 25-hydroxyvitamin D Concentrations in 16-year-old Icelandic Adolescent and Its Association With Bone Mineral Density." Public Health Nutr 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.