참고문헌
- 고진현 외: 신용접공학, (주)피어슨 에듀케이션 코리아, 서울 2002 (in Korea)
- 대한용접학회편 : 용접.접합편람, 대한용접학회, 1998 (in Korean)
- 통계청홈페이지(http://www.nso.go.kr) (in Korean)
- 무역협회(http://stat.kita.net) (in Korean)
- American Welding Society: Welding-Related Expenditures, Investments, and Productivity Measurement in U.S. Manufacturing, Construction, and Mining Industries, 2002