Singer, H. (1977). Technologies for basic needs. International Labour Office.
Chicago Style (17th ed.) CitationSinger, Hans. Technologies for Basic Needs. Geneva: International Labour Office, 1977.
ציטוט MLASinger, Hans. Technologies for Basic Needs. International Labour Office, 1977.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.