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.
Lua i Stíl Chicago (17ú heag.)Haase, 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.
Lua MLA (8ú heag.)Haase, 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.