Yes, she is in the book (Women rulers throughtout the ages, an illustrated guide / Guida M. Jackson): (quoted from page 271)
Ruler of Rome (928-932)
Marozia Crescentii was the daughter of Roman senator Theophylact Crescentii and his wife, Theodora. The patrician Crescentii family was of the landed aristocracy that controlled Rome during the nadir of the papacy. At the time of Marozia, the papacy was a local and secular institution. Italy was without effective native rule. Marozia was the mistress of Pope Sergius III and mother of his son John, later Pope John XI. She married Alberic I of Spoleto, margrave of Camerino, who, with her father, restored Sergius III to the papacy. Alberic and Marozia had a son, Alberic II. After Alberic I died in 928, Marozia overthrew and imprisoned Pope John X, raised her illegitimate son to the papacy, and took control of Rome until her son Alberic II assumed power in 932. Following the death of her first husband, she married, successively, Marquess Guido, Guy of Tuscany, and after he died, his half-brother, Hugh of Provence, king of Italy from 926 to 932. In 932 her son, Alberic II, rose up against her and drove out King Hugh.
Langer, William L., ed. World History. Boston: Houghton Mifflin, 1980. p.230
Pevite-Orton, C. W. The Shorter Cambridge History of the Crusades. Vol. 1, The Later Roman Empire to the Twelfth Century. Cambridge: Cambridge University Press, 1952, 1982. pp. 359, 437.