Sawyer, R. K. (2000). Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity. The Journal of Aesthetics and Art Criticism.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sawyer, R. Keith. "Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity." The Journal of Aesthetics and Art Criticism 2000.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sawyer, R. Keith. "Improvisation and the Creative Process: Dewey, Collingwood, and the Aesthetics of Spontaneity." The Journal of Aesthetics and Art Criticism, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.