Cita APA (7a ed.)

EUROPA PUBLICATIONS LIMITDE. (1986). The world of learning 1987 (ed.37.). Europa Publications limited.

Cita Chicago Style (17a ed.)

EUROPA PUBLICATIONS LIMITDE. The World of Learning 1987. ed.37. London: Europa Publications limited, 1986.

Cita MLA (9a ed.)

EUROPA PUBLICATIONS LIMITDE. The World of Learning 1987. ed.37. Europa Publications limited, 1986.