APA (7th ed.) Citation

Z, C., R, I., P, S., & V, L. Lactose Intolerance in Bulgaria: A Preliminary Study. Sciendo.

Chicago Style (17th ed.) Citation

Z, Chengolova, Ivanova R, Shentov P, and Levterova V. Lactose Intolerance in Bulgaria: A Preliminary Study. Sciendo.

MLA (9th ed.) Citation

Z, Chengolova, et al. Lactose Intolerance in Bulgaria: A Preliminary Study. Sciendo.