APA
Zerdick A., Schrape K. e. a. & Picot A. (2000). E-conomics: Strategies for the digital marketplace. Berlin: Springer-Verlag.
Chicago
Zerdick Axel, Schrape Klaus et al and Picot Arnold. 2000. E-conomics: Strategies for the digital marketplace. Berlin: Springer-Verlag.
Harvard
Zerdick A., Schrape K. e. a. and Picot A. (2000). E-conomics: Strategies for the digital marketplace. Berlin: Springer-Verlag.
MLA
Zerdick Axel, Schrape Klaus et al and Picot Arnold. E-conomics: Strategies for the digital marketplace. Berlin: Springer-Verlag. 2000.