Παραπομπή APA

Rolph, P. (1992). How to choose and use an executive informaion system. Viva.

Παραπομπή Chicago Style

Rolph, Paul. How to Choose and Use an Executive Informaion System. New Delhi: Viva, 1992.

Παραπομπή MLA

Rolph, Paul. How to Choose and Use an Executive Informaion System. Viva, 1992.