APA Style

Velden, P, G, D. et al (2016). Predictors of workplace violence among ambulance personnel: a longitudinal study (Vol. 3 No. 2). none: Wiley.

MLA Style

Velden, Peter, G.van, Der. et al. "Predictors of workplace violence among ambulance personnel: a longitudinal study". Vol. 3 No. 2 none: Wiley, 2016. Jurnal.