Παραπομπή APA

Ayrer, R. (2011). The Essence of Professional Issues in Computing. Perason.

Παραπομπή Chicago Style

Ayrer, Robert. The Essence of Professional Issues in Computing. New delhi: Perason, 2011.

Παραπομπή MLA

Ayrer, Robert. The Essence of Professional Issues in Computing. Perason, 2011.