Dyfyniad APA

EUROPA PUBLICATIONS LIMITDE. (1977). The world of learning 1977- 78 (ed.28.). Europa Publications limited.

Dyfyniad Arddull Chicago

EUROPA PUBLICATIONS LIMITDE. The World of Learning 1977- 78. ed.28. London: Europa Publications limited, 1977.

Dyfyniad MLA

EUROPA PUBLICATIONS LIMITDE. The World of Learning 1977- 78. ed.28. Europa Publications limited, 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.