Παραπομπή APA

Stobbs, G. A. (2002). Business method patents. Aspen publishers.

Παραπομπή Chicago Style

Stobbs, Gregory A. Business Method Patents. New York: Aspen publishers, 2002.

Παραπομπή MLA

Stobbs, Gregory A. Business Method Patents. Aspen publishers, 2002.