Andeerson, L O; Heebink, T B (1964), Wood Crate Design Manual(PDF), Handbook 252, US Forest Products Laboratory, USDA, archived from the original(PDF) on 19 March 2015, retrieved 10 June 2015
Andeerson, L O; Heebink, T B (1964), Wood Crate Design Manual(PDF), Handbook 252, US Forest Products Laboratory, USDA, archived from the original(PDF) on 19 March 2015, retrieved 10 June 2015