Nitka, A., & Kulbach, J. E. (1965). The recorder guide; an instruction method for soprano and alto recorder, including folk melodies from around the world. Oak Publications.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nitka, Arthur, و Johanna E. Kulbach. The Recorder Guide; an Instruction Method for Soprano and Alto Recorder, Including Folk Melodies from Around the World. New York: Oak Publications, 1965.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Nitka, Arthur, و Johanna E. Kulbach. The Recorder Guide; an Instruction Method for Soprano and Alto Recorder, Including Folk Melodies from Around the World. Oak Publications, 1965.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.