APA
Lubbe S., Van Heerden J. M., . (2003). The economic and social impacts of e-commerce. Hershey: Idea Group Pub.
Chicago
Lubbe Sam, Van Heerden Johanna Maria, . 2003. The economic and social impacts of e-commerce. Hershey: Idea Group Pub.
Harvard
Lubbe S., Van Heerden J. M., . (2003). The economic and social impacts of e-commerce. Hershey: Idea Group Pub.
MLA
Lubbe Sam, Van Heerden Johanna Maria, . The economic and social impacts of e-commerce. Hershey: Idea Group Pub. 2003.