  We construct three different sum rules from the two-point correlation
function with pion, $i\int d^4x e^{iq\cdot x} <0| T J_N(x) {\bar
J}_N(0)|\pi(p)>$, beyond the soft-pion limit. The PS and PV coupling schemes in
the construction of the phenomenological side are carefully considered in each
sum rule. We discuss the dependence of the result on the specific Dirac
structure and identify the source of the dependence by making specific models
for higher resonances.
