Ronny Bernard Agustinus, a. (2009). Studi karakteristik agregat kasar ringan hasil daur ulang limbah kantong plastik high density polyethylene dan pengaruhnya terhadap kuat tekan dan tarik belah serta modulus elastisitas beton ringan = Lightweight coarse aggregate characteristic study from recycled high density polyethylene plastic bags waste and its effect to the modulus of elasticity, splitting-tensile and compressive strength of lightweight concrete.

Ronny Bernard Agustinus, author. Studi Karakteristik Agregat Kasar Ringan Hasil Daur Ulang Limbah Kantong Plastik High Density Polyethylene Dan Pengaruhnya Terhadap Kuat Tekan Dan Tarik Belah Serta Modulus Elastisitas Beton Ringan = Lightweight Coarse Aggregate Characteristic Study From Recycled High Density Polyethylene Plastic Bags Waste and Its Effect to the Modulus of Elasticity, Splitting-tensile and Compressive Strength of Lightweight Concrete. 2009.

Ronny Bernard Agustinus, author. Studi Karakteristik Agregat Kasar Ringan Hasil Daur Ulang Limbah Kantong Plastik High Density Polyethylene Dan Pengaruhnya Terhadap Kuat Tekan Dan Tarik Belah Serta Modulus Elastisitas Beton Ringan = Lightweight Coarse Aggregate Characteristic Study From Recycled High Density Polyethylene Plastic Bags Waste and Its Effect to the Modulus of Elasticity, Splitting-tensile and Compressive Strength of Lightweight Concrete. 2009.