Holst Schumacher, I., Monge Rojas, R., & Barrantes Santamaría, M. (2007). Prevalence of mild serum vitamin B12 deficiency in rural and urban Costa Rican young adults.
استشهاد بنمط شيكاغوHolst Schumacher, Ileana, Rafael Monge Rojas, و Mauro Barrantes Santamaría. Prevalence of Mild Serum Vitamin B12 Deficiency in Rural and Urban Costa Rican Young Adults. 2007.
MLA استشهادHolst Schumacher, Ileana, Rafael Monge Rojas, و Mauro Barrantes Santamaría. Prevalence of Mild Serum Vitamin B12 Deficiency in Rural and Urban Costa Rican Young Adults. 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.