APA-referens (7:e uppl.)

Asper, M. "True" and "false" errors in ancient (greek) computation: Markus Asper. Productive errors : scientific concepts in Antiquity.(2012).

Chicago-referens (17:e uppl.)

Asper, Markus. ""True" and "False" Errors in Ancient (greek) Computation: Markus Asper." Productive Errors : Scientific Concepts in Antiquity.(2012) .

MLA-referens (8:e uppl.)

Asper, Markus. ""True" and "False" Errors in Ancient (greek) Computation: Markus Asper." Productive Errors : Scientific Concepts in Antiquity.(2012), .