Perundingan, U. T. M. B. I. d., & GMBH, E. C. H. (1999). Dokumen kontrak: Supply, delivery, installation, testing, commissioning and training of lift for chemical engineering pilot plant for the Faculty of Chemical and Natural Resources Engineering. Skudai : Universiti Teknologi Malaysia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerundingan, Universiti Teknologi Malaysia. Biro Inovasi dan, और Energie Consulting Heidelbergh GMBH. Dokumen Kontrak: Supply, Delivery, Installation, Testing, Commissioning and Training of Lift for Chemical Engineering Pilot Plant for the Faculty of Chemical and Natural Resources Engineering. Skudai : Universiti Teknologi Malaysia, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPerundingan, Universiti Teknologi Malaysia. Biro Inovasi dan, और Energie Consulting Heidelbergh GMBH. Dokumen Kontrak: Supply, Delivery, Installation, Testing, Commissioning and Training of Lift for Chemical Engineering Pilot Plant for the Faculty of Chemical and Natural Resources Engineering. Skudai : Universiti Teknologi Malaysia, 1999.