Zaenal, F. A., H. Naping, S. Rijal, and Yahya. “Qualified Ingredients: Professionalism in Chefs’ Culinary Ingredient Selection”. Journal of Applied Sciences in Travel and Hospitality, vol. 9, no. 1, Mar. 2026, pp. 61-72, doi:10.31940/jasth.v9i1.61-72.