APA aipamena

Yetley, E. A., & Johnson, C. L. (2011). Folate and vitamin B-12 biomarkers in NHANES: History of their measurement and use(1)(2)(3)(4)(5). American Society for Nutrition.

Chicago Style aipamena

Yetley, Elizabeth A., and Clifford L. Johnson. Folate and Vitamin B-12 Biomarkers in NHANES: History of Their Measurement and Use(1)(2)(3)(4)(5). American Society for Nutrition, 2011.

MLA aipamena

Yetley, Elizabeth A., and Clifford L. Johnson. Folate and Vitamin B-12 Biomarkers in NHANES: History of Their Measurement and Use(1)(2)(3)(4)(5). American Society for Nutrition, 2011.