Ritland, M. (2014). 3D printing with SketchUp: Real-world case studies to help you design models in SketchUp for 3D printing on anything ranging from the smallest desktop machines to the largest industrial 3D printers. Packt Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ritland, Marcus. 3D Printing with SketchUp: Real-world Case Studies to Help You Design Models in SketchUp for 3D Printing on Anything Ranging from the Smallest Desktop Machines to the Largest Industrial 3D Printers. Birmingham, [England]: Packt Publishing, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ritland, Marcus. 3D Printing with SketchUp: Real-world Case Studies to Help You Design Models in SketchUp for 3D Printing on Anything Ranging from the Smallest Desktop Machines to the Largest Industrial 3D Printers. Packt Publishing, 2014.