Training in Technology. (1999). Experiments with the Four Quadrant Drive. Berg bei Ravensburg: System Technik.
Chicago Style aipamenaTraining in Technology. Experiments With the Four Quadrant Drive. Berg bei Ravensburg: System Technik, 1999.
MLA aipamenaTraining in Technology. Experiments With the Four Quadrant Drive. Berg bei Ravensburg: System Technik, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.