USMAN, O. Et Al. 2020. Environmental performance and tourism development in EU-28 Countries: the role of institutional quality. Current Issues in Tourism , vol.23, no.17 , 2103-2108.

USMAN, O., Elsalih, O., & Koshadh, O., (2020). Environmental performance and tourism development in EU-28 Countries: the role of institutional quality. Current Issues in Tourism , vol.23, no.17, 2103-2108.

USMAN, OJONUGWA, Osama Elsalih, And Osama Koshadh. "Environmental performance and tourism development in EU-28 Countries: the role of institutional quality," Current Issues in Tourism , vol.23, no.17, 2103-2108, 2020

USMAN, OJONUGWA Et Al. "Environmental performance and tourism development in EU-28 Countries: the role of institutional quality." Current Issues in Tourism , vol.23, no.17, pp.2103-2108, 2020

USMAN, O. Elsalih, O. And Koshadh, O. (2020) . "Environmental performance and tourism development in EU-28 Countries: the role of institutional quality." Current Issues in Tourism , vol.23, no.17, pp.2103-2108.

@article{article, author={OJONUGWA USMAN Et Al. }, title={Environmental performance and tourism development in EU-28 Countries: the role of institutional quality}, journal={Current Issues in Tourism}, year=2020, pages={2103-2108} }