Authored: Van Rooyen, S.A. 2016. The legal framework for environmental auditing in the public sector in South Africa. (Mini-dissertation - MPhil Env Law). https://repository.nwu.ac.za/items/96aaeb1b-3894-45f3-9c9e-4f812237a1f0

Co-authored: Alberts, R.C. & Van Rooyen, S.A. 2021. Chapter 13: Solid Waste Management. In: Du Plessis, A., ed. Environmental Law and Local Government in South Africa. 2nd ed. Cape Town: Juta. pp. 13-1-13-42. https://juta.co.za/catalogue-details/environmental-law-and-local-government-in-south-africa_28518

Supervised: Janse Van Rensburg, R. 2022. Waste prevention in South Africa: An evaluation of waste management regulations, policies and plans. (Mini-dissertation - M Env Man). https://repository.nwu.ac.za/items/5d5c7f5f-1829-4e97-9622-804d46f810aa

Edited: Rakubu, M.P. 2023. Exploring the future of the circular economy in the South African waste sector. (Mini-dissertation - M Env Man). https://repository.nwu.ac.za/items/92a78713-42cc-4048-98fc-e19daa806d77

Edited: Van den Berg, M.J. 2024. Formulating a multi-criteria decision-analysis model for a gypsum manufacturing facility in South Africa. (Mini-dissertation - MBA). https://repository.nwu.ac.za/items/97406b19-d563-4741-b597-0cccc2f6e451