Puspitasari, A. W. (2011). The Influence of Perceived Stress and Culture Shock Among International Postgraduate Students' Academic Achievement in Universiti Utara Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Puspitasari, Ayu Widiati. The Influence of Perceived Stress and Culture Shock Among International Postgraduate Students' Academic Achievement in Universiti Utara Malaysia. 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Puspitasari, Ayu Widiati. The Influence of Perceived Stress and Culture Shock Among International Postgraduate Students' Academic Achievement in Universiti Utara Malaysia. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.