Gaya APA

STALLCUP, J, G. (1989). ILLUSTRATED CHANGES OF TH 1990 NEC . United States of America: AMERICAN TECHNICAL PUBLISHERS,INC.

Gaya MLA

STALLCUP, JAMES, G.. "ILLUSTRATED CHANGES OF TH 1990 NEC". United States of America: AMERICAN TECHNICAL PUBLISHERS,INC, 1989. Text.