APA (7th ed.) Citation

Wilff lhDong. Drafting symbol sourcebook.

Chicago Style (17th ed.) Citation

Wilff lhDong. Drafting Symbol Sourcebook. New York lbMcGraw-Hill lc1999.

MLA (9th ed.) Citation

Wilff lhDong. Drafting Symbol Sourcebook.

Warning: These citations may not always be 100% accurate.