Freddi, A., & Salmon, M. (2019). Design principles and methodologies: From conceptualization to first prototyping with examples and case studies. Springer International Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Freddi, Alessandro, و Mario Salmon. Design Principles and Methodologies: From Conceptualization to First Prototyping with Examples and Case Studies. Cham [Germany]: Springer International Publishing, 2019.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Freddi, Alessandro, و Mario Salmon. Design Principles and Methodologies: From Conceptualization to First Prototyping with Examples and Case Studies. Springer International Publishing, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.