APA (7 वां संस्करण) प्रशस्ति पत्र
Cruz-Ferreira, M. (2006). Three is a crowd?: Acquiring Portuguese in a trilingual environment. Multilingual Matters.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Cruz-Ferreira, Madalena. Three Is a Crowd?: Acquiring Portuguese in a Trilingual Environment. Clevedon, UK ; Buffalo, NY: Multilingual Matters, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Cruz-Ferreira, Madalena. Three Is a Crowd?: Acquiring Portuguese in a Trilingual Environment. Multilingual Matters, 2006.
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