APA (7th ed.) Citation
(1980). <The> world of learning 1980-81 (31. Ed.). Europa Publications.
Chicago Style (17th ed.) Citation
<The> World of Learning 1980-81. 31. Ed. London: Europa Publications, 1980.
MLA (9th ed.) Citation
<The> World of Learning 1980-81. 31. Ed. Europa Publications, 1980.
Warning: These citations may not always be 100% accurate.