Ema Waliyanti & Yudan Hari Sandika. (2016). THE FACTORS THAT INFLUENCE THE IMPLEMENTATION OF SMOKE FREE CAMPUS POLICY IN UNIVERSITY OF MUHAMMADIYAH YOGYAKARTA. Universitas Muhammadiyah Yogyakarta.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ema Waliyanti و Yudan Hari Sandika. THE FACTORS THAT INFLUENCE THE IMPLEMENTATION OF SMOKE FREE CAMPUS POLICY IN UNIVERSITY OF MUHAMMADIYAH YOGYAKARTA. Universitas Muhammadiyah Yogyakarta, 2016.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ema Waliyanti و Yudan Hari Sandika. THE FACTORS THAT INFLUENCE THE IMPLEMENTATION OF SMOKE FREE CAMPUS POLICY IN UNIVERSITY OF MUHAMMADIYAH YOGYAKARTA. Universitas Muhammadiyah Yogyakarta, 2016.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.