Christian, Ayikwa Lutete, De Jager Johan W., and Van Zyl Dion. 2019. “Enhancing the Theory of Planned Behaviour by Incorporating Social Marketing Behavioural Enhancers: A First VS Second Order Confirmatory Factor Analysis Approach”. Journal of Economics and Behavioral Studies 11 (1(J), 139-51. https://doi.org/10.22610/jebs.v11i1(J).2755.