World Health Organization. (2001). Concise International chemical Assessment Document; N - Methyl - 2 - pyrrolidone. IOMS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Concise International Chemical Assessment Document; N - Methyl - 2 - Pyrrolidone. Ginebra: IOMS, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Concise International Chemical Assessment Document; N - Methyl - 2 - Pyrrolidone. IOMS, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.