APA (7 वां संस्करण) प्रशस्ति पत्र
Badger, M. (2009). Scratch 1.4: Beginner's guide : learn to program while creating interactive stories, games, and multimedia projects using Scratch. Packt Pub. Ltd..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Badger, Michael. Scratch 1.4: Beginner's Guide : Learn to Program While Creating Interactive Stories, Games, and Multimedia Projects Using Scratch. Birmingham, UK: Packt Pub. Ltd., 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Badger, Michael. Scratch 1.4: Beginner's Guide : Learn to Program While Creating Interactive Stories, Games, and Multimedia Projects Using Scratch. Packt Pub. Ltd., 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.