APA (7th ed.) Citation

Kallikorm Riina, Kull Mart, Tamm Anu, & Lember Margus. (2009). Seasonal variance of 25-(OH) vitamin D in the general population of Estonia, a Northern European country. BMC.

Chicago Style (17th ed.) Citation

Kallikorm Riina, Kull Mart, Tamm Anu, and Lember Margus. Seasonal Variance of 25-(OH) Vitamin D in the General Population of Estonia, a Northern European Country. BMC, 2009.

MLA (9th ed.) Citation

Kallikorm Riina, et al. Seasonal Variance of 25-(OH) Vitamin D in the General Population of Estonia, a Northern European Country. BMC, 2009.