DiLeo, Carleton Beginning ruby 3 : from beginner to pro - 4th ed. - New York: Apress, 2022. - xxx, 585 p. ISBN: 9781484284537 9781484284537 Subjects--Topical Terms: Object-oriented programming (Computer science)Open source softwareRuby (Computer program language) Dewey Class. No.: 005.117 DIL