Koel, L. (1991). Carpentry (2nd ed.). American Technical Publishers.
Lua i Stíl Chicago (17ú heag.)Koel, Leonard. Carpentry. 2nd ed. Homewood, Ill.: American Technical Publishers, 1991.
Lua MLA (8ú heag.)Koel, Leonard. Carpentry. 2nd ed. American Technical Publishers, 1991.
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