(1969). The World of learning 1966-67 (17th ed.). London: Europa Publications Limited.
Chicago Style CitationThe World of Learning 1966-67. 17th ed. London: Europa Publications Limited, 1969.
MLA CitationThe World of Learning 1966-67. 17th ed. London: Europa Publications Limited, 1969.
Warning: These citations may not always be 100% accurate.