Philip Pullman. (2017). His Dark Materials: The Subtle Knife. SCHOLASTIC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilip Pullman. His Dark Materials: The Subtle Knife. SCHOLASTIC, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilip Pullman. His Dark Materials: The Subtle Knife. SCHOLASTIC, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.