D. Null

发表

Sylvia Smith, Charlotte Cervantes, Dawn Christina Null, 2022, International Journal of Hospitality Beverage Management.

J. McDaniel, M. McLernon, Saran Donahoo, 2023, Frontiers in public health.

Jebaraj Asirvatham, D. Null, 2022, International Journal of Sustainability in Higher Education.