Young, P. 1., & Schmid, C. F. (1956). Scientific social surveys and research; an introduction to the background, content, methods, principles, and analysis of social studies. Prentice-Hall.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Young, Pauline 1896, و Calvin F. Schmid. Scientific Social Surveys and Research; an Introduction to the Background, Content, Methods, Principles, and Analysis of Social Studies. Englewood Cliffs, N.J: Prentice-Hall, 1956.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Young, Pauline 1896, و Calvin F. Schmid. Scientific Social Surveys and Research; an Introduction to the Background, Content, Methods, Principles, and Analysis of Social Studies. Prentice-Hall, 1956.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.