Intermediate school students purchased more à la carte foods and calories from à la carte foods than elementary students.
Betsey Ramirez, Tzu-An Chen, Carolyn E. Moore, Jayna M. Dave, Karen Weber Cullen 2018, 'The costs and calorie content of à la carte food items purchased by students duringschool lunch', Preventive medicine reportshttp://www.sciencedirect.com/science/article/pii/S221133551830041X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)