APA (7th ed.) Citation

O'Neill, R. (1994). Longman english works: Students' book. Longman.

Chicago Style (17th ed.) Citation

O'Neill, Robert. Longman English Works: Students' Book. Madrid: Longman, 1994.

MLA (9th ed.) Citation

O'Neill, Robert. Longman English Works: Students' Book. Longman, 1994.