APA (7th ed.) Citation
Annandale, J. G. (2013). Sustainable use of sewage sludge as a source of nitrogen and phosphorus in cropping systems. University of Pretoria.
Chicago Style (17th ed.) Citation
Annandale, John George. Sustainable Use of Sewage Sludge as a Source of Nitrogen and Phosphorus in Cropping Systems. University of Pretoria, 2013.
MLA (9th ed.) Citation
Annandale, John George. Sustainable Use of Sewage Sludge as a Source of Nitrogen and Phosphorus in Cropping Systems. University of Pretoria, 2013.
Warning: These citations may not always be 100% accurate.