Julisantika, Ivana and Widiputri, Diah and Kartawiria, Irvan S (2019) Extraction Process Upscaling Of Cymbopogon Citratus (Lemongrass) At Optimum Agi Level. Bachelor thesis, Swiss German University.

Nadya, Nadine and Kartawiria, Irvan S and Widiputri, Diah (2019) Optimization of Spray Distillation Column for Ethanol Purification. Bachelor thesis, Swiss German University.

Nugriani, Nandhita Octavia and Widiputri, Diah and Yusri, Silvya (2019) Antioxidant Stability Testing on Liquid and Powder Eichhornia Crassipes Extract. Bachelor thesis, Swiss German University.

Wasistha, Michelle Kanya and Sutanto, Hery and Widiputri, Diah (2019) Application of Red (Hylocereus Polyrhizus) Dragon Fruit Peel Extract as Natural Colorant and Antioxidant Agent for Lip Stain. Bachelor thesis, Swiss German University.