International telecommunication union. (1971). Tenth report. Geneva: International telecommunication union.
Trích dẫn kiểu ChicagoInternational telecommunication union. Tenth Report. Geneva: International telecommunication union, 1971.
ציטוט MLAInternational telecommunication union. Tenth Report. Geneva: International telecommunication union, 1971.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.