APA (7th ed.) Citation

(1972). The World of learning 1971- 1972 (22nd. ed.). Allen & Unwi.

Chicago Style (17th ed.) Citation

The World of Learning 1971- 1972. 22nd. ed. Londo: Allen & Unwi, 1972.

MLA (8th ed.) Citation

The World of Learning 1971- 1972. 22nd. ed. Allen & Unwi, 1972.

Warning: These citations may not always be 100% accurate.