Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.