  In this article, we investigate the resurgent properties of the WKB solutions
for a singularly perturbated second order ordinary differential equation. In
particular, we extend and propose a new proof of a theorem due to Aoki (et al)
near a simple turning point, in the framework of the exact WKB analysis. Our
scheme of proof is based on a Laplace-integral representation derived from an
existence theorem of holomorphic solutions for a linear singular partial
differential equation.
