EUROPA PUBLICATIONS LIMITDE. (1976). The world of learning 1977- 78 (ed.28.). Europa Publications limited.
Chicagoスタイル(17版)引用形式EUROPA PUBLICATIONS LIMITDE. The World of Learning 1977- 78. ed.28. London: Europa Publications limited, 1976.
MLA(9版)引用形式EUROPA PUBLICATIONS LIMITDE. The World of Learning 1977- 78. ed.28. Europa Publications limited, 1976.
警告: この引用は必ずしも正確ではありません.