APA (7th ed.) Citation

Ostrowskij, Jarosz, D., & Butruk, E. Liver vitamín A concentration in patients who died of cancer.

Chicago Style (17th ed.) Citation

Ostrowskij, D. Jarosz, and E. Butruk. Liver Vitamín A Concentration in Patients Who Died of Cancer.

MLA (9th ed.) Citation

Ostrowskij, et al. Liver Vitamín A Concentration in Patients Who Died of Cancer.