Dubbel, H., Beitz, W., Kuttner, K., Davies, B. J., Shields, M. J., Beitz, W., . . . Shields, M. J. (1994). Handbook of mechanical enginering. London: Springer-Verlag.

Dubbel, Heinrich, W. Beitz, K.-H Kuttner, B. J. Davies, M. J. Shields, Wolfgang Beitz, Karl-Heinz Kόttner, Karl-Heinz Kuttner, and Michael J. Shields. Handbook of Mechanical Enginering. London: Springer-Verlag, 1994.

Dubbel, Heinrich, et al. Handbook of Mechanical Enginering. London: Springer-Verlag, 1994.