Masarap, R. (2020). Challenges faced by the STPM voice students for breathing and voice projection technique and the efficient practice method in the classical music / Ratnani Masarap.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Masarap, Ratnani. Challenges Faced by the STPM Voice Students for Breathing and Voice Projection Technique and the Efficient Practice Method in the Classical Music / Ratnani Masarap. 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Masarap, Ratnani. Challenges Faced by the STPM Voice Students for Breathing and Voice Projection Technique and the Efficient Practice Method in the Classical Music / Ratnani Masarap. 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.