APA (7th ed.) Citation

Keen, E. M. (1973). The Aberystwyth Index Languages Test.

Chicago Style (17th ed.) Citation

Keen, E. Michael. The Aberystwyth Index Languages Test. 1973.

MLA (9th ed.) Citation

Keen, E. Michael. The Aberystwyth Index Languages Test. 1973.

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