Không rõ. (2010). Communication Systems. NOTNXB.
Trích dẫn kiểu ChicagoKhông rõ. Communication Systems. NOTNXB, 2010.
ציטוט MLAKhông rõ. Communication Systems. NOTNXB, 2010.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.
Không rõ. (2010). Communication Systems. NOTNXB.
Trích dẫn kiểu ChicagoKhông rõ. Communication Systems. NOTNXB, 2010.
ציטוט MLAKhông rõ. Communication Systems. NOTNXB, 2010.