Christian, A.L., W., D.J.J. and Dion, V.Z. 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) (Mar. 2019), 139-151. DOI:https://doi.org/10.22610/jebs.v11i1(J).2755.