Wakasala, M. M., D. M. Miricho, and D. M. Wandolo. “Role of Green Products on Consumer Buying Behavior in 4-5 Star Restaurants in Nairobi County, Kenya”. Journal of Hospitality and Tourism Management, vol. 3, no. 1, Feb. 2020, pp. 40-54, https://stratfordjournals.org/journals/index.php/Journal-of-Hospitality/article/view/447.