Choong, K. T. (2011). Treated Used Engine Oil as a Concrete Admixture. Universiti Teknologi Petronas.
استشهاد بنمط شيكاغوChoong, Koo Ting. Treated Used Engine Oil As a Concrete Admixture. Universiti Teknologi Petronas, 2011.
MLA استشهادChoong, Koo Ting. Treated Used Engine Oil As a Concrete Admixture. Universiti Teknologi Petronas, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.