APA Style

BAL, P, M. et al (2015). Aging Workers and the Employee-Employer Relationship (Ed. 1). Cham, Switzerland: Springer Cham.

MLA Style

BAL, P., Matthijs. et al. "Aging Workers and the Employee-Employer Relationship". Ed. 1 Cham, Switzerland: Springer Cham, 2015. Text.