ÖZKAN, N. F. And ULUTAŞ, B. Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic. 2022. In Advances in Health and Disease Volume 54 , Nova Science Publisher, New York, 119-136.

ÖZKAN, N. F., & ULUTAŞ, B., (2022). Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic. Advances in Health and Disease Volume 54 (pp.119-136), New York: Nova Science Publisher.

ÖZKAN, NECMETTİN, And BERNA ULUTAŞ. "Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic." In Advances in Health and Disease Volume 54 , 119-136. New York: Nova Science Publisher, 2022

ÖZKAN, NECMETTİN F. And ULUTAŞ, BERNA. "Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic." Advances in Health and Disease Volume 54 , Nova Science Publisher, 2022, pp.119-136.

ÖZKAN, N. F. And ULUTAŞ, B. (2022) "Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic", Advances in Health and Disease Volume 54 . New York: Nova Science Publisher.

@bookchapter{bookchapter, author ={NECMETTİN FIRAT ÖZKAN And author ={BERNA ULUTAŞ}, chaptertitle={Efficiency Evaluation of Health Services of Selected Countries during the COVID-19 Pandemic}, booktitle={ Advances in Health and Disease Volume 54}, publisher={Nova Science Publisher}, city={New York},year={2022} }