Umeokwe, Eucharia Chikwuo. 2022. “DEVELOPMENT, VALIDATION AND USE OF PRINCIPALS’ LEADERSHIP BEHAVIOURS MEASURING INSTRUMENT FOR SECONDARY SCHOOLS IN SOUTH EAST NIGERIA”. The African Journal of Behavioural and Scale Development Research 4 (1). https://doi.org/10.58579/AJB-SDR/4.1.2022.42.