Petikan APA

Koh , H. B., Lee, Y. L., & Yeoh, D. (2004). Medium lightweight concrete containing palm oil clinker (POC) and palm oil fuel ash (POFA).

Petikan Gaya Chicago

Koh , Heng Boon, Yee Loon Lee, and David Yeoh. Medium Lightweight Concrete Containing Palm Oil Clinker (POC) and Palm Oil Fuel Ash (POFA). 2004.

Petikan MLA

Koh , Heng Boon, Yee Loon Lee, and David Yeoh. Medium Lightweight Concrete Containing Palm Oil Clinker (POC) and Palm Oil Fuel Ash (POFA). 2004.

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