https://www.marketingforsustainability.ca/studentwork-youthengagement/best-practices-and-critical-criteria-to-support-successful-youth-based-environmental-engagement-programmes%3A-an-evaluation-of-the-yeep-framework 2022-04-04 https://www.marketingforsustainability.ca/studentwork-youthengagement/environmental-engagement-and-generation-z%3A-evaluating-and-modifying-the-yeep-framework-against-research-and-observations-on-generation-z-youth-and-youth-leaders 2022-04-04