APA (7th ed.) Citation

Boersma, P. (1979). Machine building industry. . Metal workers.

Chicago Style (17th ed.) Citation

Boersma, Pieter. Machine Building Industry. . Metal Workers. 1979.

MLA (8th ed.) Citation

Boersma, Pieter. Machine Building Industry. . Metal Workers. 1979.

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