  We study the asymptotic behavior of the Witten-Reshetikhin-Turaev invariant
associated with the square of the $n$-th root of unity with odd $n$ for a
Seifert fibered space obtained by an integral Dehn surgery along a torus knot.
We show that it can be described as a sum of the Chern-Simons invariants and
the twisted Reidemeister torsions both associated with representations of the
fundamental group to the two-dimensional complex special linear group.
