Ishmael (Son of Abraham and Hagar) - Bakhos, Carol; Zucker, David J.; Tieszen, Charles L.; Ruiten, Jacques van; Pullan, Amanda; Petersen, Nils Holger; Page, Matt; O'Kane, Martin; Naumann, Thomas; Knauf, Ernst Axel; Fuhrmann, Sebastian; Edelman, Marsha Bryan 19XX- (Encyclopedia of the bible and its reception, 2016)