  We compute the full bispectra, namely both auto- and cross- bispectra, of
primordial curvature and tensor perturbations in the most general single-field
inflation model whose scalar and gravitational equations of motion are of
second order. The formulae in the limits of k-inflation and potential-driven
inflation are also given. These expressions are useful for estimating the full
bispectra of temperature and polarization anisotropies of the cosmic microwave
background radiation.
