International Institute for Educational Planning, Józefowicz, A., & Sanyal, B. C. (1978). Graduate employment and planning of higher education in Poland. International Institute for Educational Planning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Institute for Educational Planning, Adam Józefowicz, و Bikas C. Sanyal. Graduate Employment and Planning of Higher Education in Poland. Paris: International Institute for Educational Planning, 1978.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Institute for Educational Planning, et al. Graduate Employment and Planning of Higher Education in Poland. International Institute for Educational Planning, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.