APA (7th ed.) Citation
(2026). The effect of Mount Sinabung volcanic ash and the addition of silica fume as a partial substitution of cement weight on the compressive strength of concrete. Challenge Journal of Concrete Research Letters.
Chicago Style (17th ed.) Citation
"The Effect of Mount Sinabung Volcanic Ash and the Addition of Silica Fume as a Partial Substitution of Cement Weight on the Compressive Strength of Concrete." Challenge Journal of Concrete Research Letters 2026.
MLA (9th ed.) Citation
"The Effect of Mount Sinabung Volcanic Ash and the Addition of Silica Fume as a Partial Substitution of Cement Weight on the Compressive Strength of Concrete." Challenge Journal of Concrete Research Letters, 2026.
Warning: These citations may not always be 100% accurate.