American softwood lumber standard :
a voluntary standard developed by the National Bureau of Standards in cooperation with producers, distributors, and users.

APA Citation

United States. National Bureau of Standards. (1986). American softwood lumber standard: a voluntary standard developed by the National Bureau of Standards in cooperation with producers, distributors, and users. Washington, D.C.: The Bureau .

MLA Citation

United States. National Bureau of Standards. American Softwood Lumber Standard: a Voluntary Standard Developed by the National Bureau of Standards In Cooperation With Producers, Distributors, And Users. Washington, D.C.: The Bureau , 1986.