Freestone, R. Sulman of Sydney: Modern planning in theory and practice 1890-1930. Town Planning Review.
Lua i Stíl Chicago (17ú heag.)Freestone, Robert. "Sulman of Sydney: Modern Planning in Theory and Practice 1890-1930." Town Planning Review .
Lua MLA (9ú heag.)Freestone, Robert. "Sulman of Sydney: Modern Planning in Theory and Practice 1890-1930." Town Planning Review, .
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