APA استشهاد

Leach, D. P. (1981). Digital principles and applications (6.).

استشهاد بنمط شيكاغو

Leach, Donald P. Digital Principles and Applications. 6. TATA McGraw-Hill Publishing Co., New Delhi, 1981.

MLA استشهاد

Leach, Donald P. Digital Principles and Applications. 6. 1981.