Não informado. (1971). Landscape Design. Institute of Landscape Design.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Landscape Design. London: Institute of Landscape Design, 1971.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Landscape Design. Institute of Landscape Design, 1971.
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