^Noe, Raymond A.; Hollenbeck, John R.; Gerhart, Barry (2014). Human Resource Management: Gaining a Competitive Advantage with OLC card, McGraw-Hill/Irwin. BiggerBooks. ISBN 9780073131948 (revised Aug 2023)
^ (2013). Human Resource Management: Gaining a Competitive Advantage with OLC cardECampus. ISBN 9780073131948 (revised Apr 2015)