| Key performance indicators: developing, implementing, and using winning KPIs | John Wiley & Sons, Inc. | Tiada | 2015 | 978-1-118-92510-2 |
| Key concepts in language and linguistics | Routledge | Tiada | 1999 | 0-415-15742-0 |
| Key account selling | AMACOM | Tiada | 1989 | 0814459854 |
| Key to high school English grammar and composition | | Tiada | 1976 | |
| Key to economic progress | Ballantine Books | Tiada | 1958 | |
| Key concepts in Usman Awang`s short stories | Dewan Bahasa dan Pustaka (Terbitan) | Tiada | 2006 | 983-62-8792-2 |
| Key to English book two | Longman Malaysia | Tiada | 1974 | 0582699509 |
| Key concepts in language and linguistics | AB&A | Tiada | 2005 | 1-4039-3391-x |
| Key Concepts in Usman Awang's Short Stories: Developing a Critical Tradition | Dewan Bahasa dan Pustaka (Terbitan) | Tiada | 2006 | 983-62-8792-2 |
| Key concepts in contemporary literature | AB&A | Tiada | 2006 | 1-4039-4691-4 |