Clarfield, I. J., & Guy, S. W. (1996). From mystery to mastery: A unique and exciting step-by-step approach to practicing and performing favorite piano repertoire from four stylistic periods : study guide. Alfred Pub.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Clarfield, Ingrid Jacobson, و Suzanne West Guy. From Mystery to Mastery: A Unique and Exciting Step-by-step Approach to Practicing and Performing Favorite Piano Repertoire from Four Stylistic Periods : Study Guide. Van Nuys, Calif: Alfred Pub, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Clarfield, Ingrid Jacobson, و Suzanne West Guy. From Mystery to Mastery: A Unique and Exciting Step-by-step Approach to Practicing and Performing Favorite Piano Repertoire from Four Stylistic Periods : Study Guide. Alfred Pub, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.