Published Books
1. Macharia J. Computer Studies Book 1, A Text Book For Secondary Schools Computer Studies Education, 2nd Edition, Topmark Publishers, Nairobi Kenya. 2006, ISBN 9966-9671-0-9
2. Macharia J. Computer Studies Book 2, A Text Book For Secondary Schools Computer Studies Education, Topmark Publishers, Nairobi Kenya. 2006 ISBN 9966-9671-1-7
3. Macharia J. Computer Studies Book 3, a Text book for secondary schools computer studies education , Topmark Publishers, Nairobi Kenya. 2005. ISBN 9966-9671-2-5
4. Macharia J. Computer Studies Book 4, A Text Book For Secondary Schools Computer Studies Education, Topmark Publishers, Nairobi Kenya. 2005. ISBN 9966-9671-3-3
