Onyango, Esther Akinyi Ochino-, Jacinta Mary Adhiambo, and Paschal Wambiya. 2018. “Principals’ Attitude towards Quality Assurance and Standards Assessment: Implications to Secondary School Supervision in Nairobi, Kenya”. The International Journal of Humanities & Social Studies 6 (7). https://internationaljournalcorner.com/index.php/theijhss/article/view/131714.