\[p_{n}(x)=p_{n}\left(x;a,b;q\right)={{}_{2}\phi_{1}}\left({q^{-n},abq^{n+1}%
\atop aq};q,qx\right)=(-b)^{-n}q^{\ifrac{-n(n+1)}{2}}\frac{\left(qb;q\right)_{%
n}}{\left(qa;q\right)_{n}}\*{{}_{3}\phi_{2}}\left({q^{-n},abq^{n+1},qbx\atop qb%
,0};q,q\right).\]