Chai, C. H. (1998). The study of optical characteristic in variable focusing heliostat prototype.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChai, Choong Heng. The Study of Optical Characteristic in Variable Focusing Heliostat Prototype. 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChai, Choong Heng. The Study of Optical Characteristic in Variable Focusing Heliostat Prototype. 1998.
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