Pethick, E. (2006). Degree zero: Roy Ascott's radical 'Groundcourse' at the Ealing and Ipswich art schools in the 1960s was as influential as it was unorthodox in its approach to teaching art. frieze.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pethick, Emily. "Degree Zero: Roy Ascott's Radical 'Groundcourse' at the Ealing and Ipswich Art Schools in the 1960s Was as Influential as It Was Unorthodox in Its Approach to Teaching Art." Frieze 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Pethick, Emily. "Degree Zero: Roy Ascott's Radical 'Groundcourse' at the Ealing and Ipswich Art Schools in the 1960s Was as Influential as It Was Unorthodox in Its Approach to Teaching Art." Frieze, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.