Ferry, D. (1991). Cost Planning Of Building Douglas Ferry, Peter S. Brandon. Blackwell Science.
Lua i Stíl Chicago (17ú heag.)Ferry, Douglas. Cost Planning Of Building Douglas Ferry, Peter S. Brandon. Blackwell Science, 1991.
Lua MLA (8ú heag.)Ferry, Douglas. Cost Planning Of Building Douglas Ferry, Peter S. Brandon. Blackwell Science, 1991.
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