  In this paper, we investigate a bitopological duality for algebras of
Fitting's multi-valued logic. We also extend the natural duality theory for
$\mathbb{ISP_I}(\mathcal{L})$ by developing a duality for
$\mathbb{ISP}(\mathcal{L})$, where $\mathcal{L}$ is a finite algebra in which
underlying lattice is bounded distributive.
