APA (7th ed.) Citation

I, I., B, A., A, K., Y, B., & K, T. (2016). Serum Copper and Zinc in a Representative Sample of Bulgarian Population. Sciendo.

Chicago Style (17th ed.) Citation

I, Ivanova, Atanasova B, Kostadinova A, Bocheva Y, and Tzatchev K. Serum Copper and Zinc in a Representative Sample of Bulgarian Population. Sciendo, 2016.

MLA (8th ed.) Citation

I, Ivanova, et al. Serum Copper and Zinc in a Representative Sample of Bulgarian Population. Sciendo, 2016.