APA (7th ed.) Citation

National Lumber Manufacturers Association. (1939). Wood structural design data (2d. ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

National Lumber Manufacturers Association. Wood Structural Design Data. 2d. ed. Washington: [publisher not identified], 1939.

MLA (9th ed.) Citation

National Lumber Manufacturers Association. Wood Structural Design Data. 2d. ed. [publisher not identified], 1939.