Schumacher, E. (1977). A guide for the perplexed. Jonathan Cape.
Lua i Stíl Chicago (17ú heag.)Schumacher, E. A Guide for the Perplexed. London: Jonathan Cape, 1977.
Lua MLA (9ú heag.)Schumacher, E. A Guide for the Perplexed. Jonathan Cape, 1977.
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