International Telegraph and Telephone Consultative Committee. (1970). Primary sources of energy. International Telecommunication Union.
Chicago Style (17th ed.) CitationInternational Telegraph and Telephone Consultative Committee. Primary Sources of Energy. Geneva: International Telecommunication Union, 1970.
ציטוט MLAInternational Telegraph and Telephone Consultative Committee. Primary Sources of Energy. International Telecommunication Union, 1970.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.