Não informado. (1976). Communicator. Institute of Public Relations.
Chicagoスタイル(17版)引用形式Não informado. Communicator. London: Institute of Public Relations, 1976.
MLA(8版)引用形式Não informado. Communicator. Institute of Public Relations, 1976.
警告: この引用は必ずしも正確ではありません.