Παραπομπή APA

Leon, A., & Leon, M. (1999). Database management systems. Vikas.

Παραπομπή Chicago Style

Leon, Alexis, και Mathews Leon. Database Management Systems. New Delhi: Vikas, 1999.

Παραπομπή MLA

Leon, Alexis, και Mathews Leon. Database Management Systems. Vikas, 1999.