APA (7th ed.) Citation

ScienceDirect (Online service), Walden, I., & Hörnle, J. (2001). E-commerce law and practice in Europe. Elsevier Science.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Ian Walden, and Julia Hörnle. E-commerce Law and Practice in Europe. Burlington: Elsevier Science, 2001.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. E-commerce Law and Practice in Europe. Elsevier Science, 2001.