Marajan, C., & Yun, M. Y. (2007). The effects of dry sludge from waste water treatment plant on the compressive strength of concrete / Caroline Marajan and Mohd Yustafari Yun. Universiti Teknologi MARA, Pulau Pinang & Pusat Penerbitan Universiti (UPENA).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিMarajan, Caroline, এবং Mohd Yustafari Yun. The Effects of Dry Sludge from Waste Water Treatment Plant on the Compressive Strength of Concrete / Caroline Marajan and Mohd Yustafari Yun. Universiti Teknologi MARA, Pulau Pinang & Pusat Penerbitan Universiti (UPENA), 2007.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিMarajan, Caroline, এবং Mohd Yustafari Yun. The Effects of Dry Sludge from Waste Water Treatment Plant on the Compressive Strength of Concrete / Caroline Marajan and Mohd Yustafari Yun. Universiti Teknologi MARA, Pulau Pinang & Pusat Penerbitan Universiti (UPENA), 2007.