Παραπομπή APA

Walsh & Ellison R. (1975). Data systems: Design and management. Goodyear.

Παραπομπή Chicago Style

Walsh και Ellison R. Data Systems: Design and Management. California: Goodyear, 1975.

Παραπομπή MLA

Walsh και Ellison R. Data Systems: Design and Management. Goodyear, 1975.