(1980). Special study on economic change. Washington: U.S. Government Printing Office.
Trích dẫn kiểu ChicagoSpecial Study On Economic Change. Washington: U.S. Government Printing Office, 1980.
ציטוט MLASpecial Study On Economic Change. Washington: U.S. Government Printing Office, 1980.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.