(1976). Listen, reflect, act: With attentive ear courageous heart. s.n..
Chicagoスタイル(17版)引用形式Listen, Reflect, Act: With Attentive Ear Courageous Heart. [S.l.: s.n., 1976.
MLA(8版)引用形式Listen, Reflect, Act: With Attentive Ear Courageous Heart. s.n., 1976.
警告: この引用は必ずしも正確ではありません.