APA (7th ed.) Citation
Page, J. S., & Nation, J. G. (1976). Estimator's piping man hour manual. Gulf publ. com..
Chicago Style (17th ed.) Citation
Page, John S., and James G. Nation. Estimator's Piping Man Hour Manual. Houston, Tex.: Gulf publ. com., 1976.
MLA (9th ed.) Citation
Page, John S., and James G. Nation. Estimator's Piping Man Hour Manual. Gulf publ. com., 1976.
Warning: These citations may not always be 100% accurate.