Christopher Stasheff - Her Majesty's Wizard

Used paperback.

Matt Mantrell translates runes on a scrap of parchment, and himself to a world where verses are spells. Imprisoned by evil sorcerer Malingo, Matt tries for a light, gets dragon Stegoman, drunk on fire, in need of dentist. They rescue Princess Alisande, rightful ruler, and fight to restore her kingdom with helpful Sir Guy, lust witch Sayeesa and werewolf priest Brunel.