| Assessing the impact of ESD: Methods, challenges, results Q Ssossé, J Wagner, C Hopper Sustainability 13 (5), 2854, 2021 | 36 | 2021 |
| 16 Education for sustainability C Hopper, J Wagner Sustainability in Public Procurement, Corporate Law and Higher Education, 298, 2023 | | 2023 |
| Sustainable Procurement and Product Certification: Leading question: Should certified products be made mandatory? J Wagner, C Hopper Critical Questions in Sustainability and Hospitality, 141-150, 2023 | | 2023 |
| Assessing the Impact of ESD: Methods, Challenges, Results. Sustainability 2021, 13, 2854 Q Ssossé, J Wagner, C Hopper s Note: MDPI stays neutral with regard to jurisdictional claims in published …, 2021 | | 2021 |
| Education for sustainability: Full speed ahead! C Hopper, J Wagner Sustainability in Public Procurement, Corporate Law and Higher Education …, 0 | | |
| Back to School for the Planet Alumni Initiative: Lifelong Learning in Sustainability C Hopper, J Wagner Transforming Business Education for a Sustainable Future, 147-159, 0 | | |
