APA (7th ed.) Citation
Sumner, P. (2016). A comparative study of gully erosion contributing factors in two tertiary catchments in Mpumalanga South Africa. University of Pretoria.
Chicago Style (17th ed.) Citation
Sumner, P.D. A Comparative Study of Gully Erosion Contributing Factors in Two Tertiary Catchments in Mpumalanga South Africa. University of Pretoria, 2016.
MLA (9th ed.) Citation
Sumner, P.D. A Comparative Study of Gully Erosion Contributing Factors in Two Tertiary Catchments in Mpumalanga South Africa. University of Pretoria, 2016.
Warning: These citations may not always be 100% accurate.