Haase, C. (2010). Modest Variations - Theoretical Tradition and Practical Innovation in the Mechanical Arts from Antiquity to the Arab Middle Ages. Variantology 4 : On Deep Time Relations of Arts, Sciences and Technologies In the Arabic-Islamic World and Beyond.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHaase, Claus-Peter. "Modest Variations - Theoretical Tradition and Practical Innovation in the Mechanical Arts from Antiquity to the Arab Middle Ages." Variantology 4 : On Deep Time Relations of Arts, Sciences and Technologies In the Arabic-Islamic World and Beyond 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHaase, Claus-Peter. "Modest Variations - Theoretical Tradition and Practical Innovation in the Mechanical Arts from Antiquity to the Arab Middle Ages." Variantology 4 : On Deep Time Relations of Arts, Sciences and Technologies In the Arabic-Islamic World and Beyond, 2010.