記錄引文
APA引文
Machado João. (1983). Abgegrenztes Dourogebiet. Instituto do Vinho do Porto.
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Chicago Style (17th ed.) Citation
Machado João. Abgegrenztes Dourogebiet. Instituto do Vinho do Porto, 1983.
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MLA引文
Machado João. Abgegrenztes Dourogebiet. Instituto do Vinho do Porto, 1983.
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警告：這些引文格式不一定是100％准確.