1. ALS. (1970). American lumber standard board of review. American Softwood Lumber Standard PS 20–70 (ALS). American Lumber Standards Committee. Washington, DC: U.S. Department of Commerce.
2. AS 1720.1. (2010). Timber Structures – Design Methods. Standards Australia, Australia.
3. AS 2082. (2007). Timber - Hardwood - Visually stress graded for structural purposes. Standards Australia, Australia.
4. AS/NZS 1170.0. (2002). Structural design actions. Part 0: General principles. Standards Australia/Standards New Zealand, Australia.
5. AS/NZS 1170.1. (2002). Structural design actions. Part 1: Permanent, imposed and other actions. Standards Australia/Standards New Zealand, Australia.