APA (7 वां संस्करण) प्रशस्ति पत्र
Kranich, S. (2010). The progressive in modern English: A corpus-based study of grammaticalization and related changes. Rodopi.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Kranich, Svenja. The Progressive in Modern English: A Corpus-based Study of Grammaticalization and Related Changes. Amsterdam: Rodopi, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Kranich, Svenja. The Progressive in Modern English: A Corpus-based Study of Grammaticalization and Related Changes. Rodopi, 2010.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.