World Health Organization. (2004). Concise International chemical Assessment Document; As Phalt (Bitumen). IOMS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Concise International Chemical Assessment Document; As Phalt (Bitumen). Ginebra: IOMS, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Concise International Chemical Assessment Document; As Phalt (Bitumen). IOMS, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.