Gaya APA

Duelm, B, L. (1992). Computer-Aided Drafting: Fundamentals and Applications (-). Amarica: The Goodheart - Willcox.

Gaya MLA

Duelm, Brian, L. "Computer-Aided Drafting: Fundamentals and Applications". - Amarica: The Goodheart - Willcox, 1992. Text.