APA (7th ed.) Citation

Elms, A. (1991). Wordperfect. Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Elms, Ann. Wordperfect. Kent: Hodder and Stoughton, 1991.

MLA (9th ed.) Citation

Elms, Ann. Wordperfect. Hodder and Stoughton, 1991.