Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

(1982). The world of learning, 1982-83 (33rd ed.). Europa Publications.

Chicago Citation Edition Citation

The World of Learning, 1982-83. 33rd ed. London: Europa Publications, 1982.

MLA Citation Edition Citation

The World of Learning, 1982-83. 33rd ed. Europa Publications, 1982.