Pahl, G., & Beitz, W. (1996). Engineering design: A systematic approach (2nd rev. ed.). Springer.

Pahl, G., and Wolfgang Beitz. Engineering Design: A Systematic Approach. 2nd rev. ed. London: Springer, 1996.

Pahl, G., and Wolfgang Beitz. Engineering Design: A Systematic Approach. 2nd rev. ed. Springer, 1996.