HORNUNG, W. J. (1966). Architectural drafting.-- Ed.4. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)HORNUNG, William J. Architectural Drafting.-- Ed.4. New York: Prentice-Hall, 1966.
Lua MLA (9ú heag.)HORNUNG, William J. Architectural Drafting.-- Ed.4. Prentice-Hall, 1966.
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