Rizki Amalia. (2010). A study on perceived job stressors among indonesian railroad workers in Medan, Indonesia. Fakulti Perubatan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rizki Amalia. A Study on Perceived Job Stressors Among Indonesian Railroad Workers in Medan, Indonesia. Kuala Lumpur: Fakulti Perubatan, Universiti Kebangsaan Malaysia, 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rizki Amalia. A Study on Perceived Job Stressors Among Indonesian Railroad Workers in Medan, Indonesia. Fakulti Perubatan, Universiti Kebangsaan Malaysia, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.