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

APA Citation Edition Citation

(1986). The world of learning 1986. Thirty-sixth edition.

Chicago Citation Edition Citation

The World of Learning 1986. Thirty-sixth Edition. London, 1986.

MLA Citation Edition Citation

The World of Learning 1986. Thirty-sixth Edition. 1986.