APA Citation

Petro, F. J., & Calvert, W. W. (1976). How to grade hardwood logs for factory lumber. Ottawa: Environment Canada.

Chicago Style Citation

Petro, F. J., and W. W. Calvert. How to Grade Hardwood Logs for Factory Lumber. Ottawa: Environment Canada, 1976.

MLA Citation

Petro, F. J., and W. W. Calvert. How to Grade Hardwood Logs for Factory Lumber. Ottawa: Environment Canada, 1976.

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