Armacost, G. H. (1940). High school principals' annual reports: A study of typewritten, duplicated, and printed annual reports of high school principals to the superintendent and board of education, and to the public. Teachers College.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Armacost, George Henry. High School Principals' Annual Reports: A Study of Typewritten, Duplicated, and Printed Annual Reports of High School Principals to the Superintendent and Board of Education, and to the Public. New York: Teachers College, 1940.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Armacost, George Henry. High School Principals' Annual Reports: A Study of Typewritten, Duplicated, and Printed Annual Reports of High School Principals to the Superintendent and Board of Education, and to the Public. Teachers College, 1940.