Gaya APA

Ziegler, D, P, S. (1973). Unit 5 Computer Concepts : Basic Electronic Systems Technology (Ed. 1). California: Bruce/Beverly Hills.

Gaya MLA

Ziegler, Dugger, Patrick, Suesa. "Unit 5 Computer Concepts : Basic Electronic Systems Technology". Ed. 1 California: Bruce/Beverly Hills, 1973. Text.