Author of Three chapters in the Booklet Stock Theft Prevention Manual. Publisher Agriconnect, Pretoria
- Clack W, 2023, Mpumalanga Livestock Theft 2023. Available at https://www.researchgate.net/publication/374628509_Livestock_Theft_in_Mpumalanga2023
- Clack W, 2023, Eastern Cape Livestock Theft 2023 Available at https://www.researchgate.net/publication/374628582_Eastern_Cape_Livestock_Theft_2023
- Clack W, 2023, KwaZulu-Natal Livestock Theft 2023. Available at https://www.researchgate.net/publication/374628511_Kwazulu_Livestock_Theft_2023
- Clack W, 2023, Free State Livestock Report Theft 2023. Available at https://www.researchgate.net/publication/374628625_Free_State_Livestock_Theft_2023
- Clack W, 2023, Northern Cape Livestock Theft 2023. Available at https://www.researchgate.net/publication/374628581_Northern_Cape_Livestock_Theft_2023
- Clack W, 2023, Livestock Theft in Limpopo Province 2023. Available at https://www.researchgate.net/publication/374628405_Livestock_Theft_in_Limpopo_Province_2023
- Clack W, 2023, Livestock Theft in Gauteng Province 2023. Available at https://www.researchgate.net/publication/374628633_Livestock_Theft_in_Gauteng_Province_2023_update
- Clack W, 2023, Livestock Theft in Western Cape 2023. Available at https://www.researchgate.net/publication/374628717_Livestock_Theft_in_Western_Cape_2023
- Clack W, 2023, North West Livestock Theft 2023. Available at https://www.researchgate.net/publication/374628581_North_West_Livestock_Theft_2023