APA Citatie

McDonald, L., Wardle, J., Llewellyn, C. H., van Jaarsveld, C. H., & Fisher, A. (2014). Predictors of shorter sleep in early childhood. Elsevier Science.

Chicago Style citaat

McDonald, Laura, Jane Wardle, Clare H. Llewellyn, Cornelia H.M van Jaarsveld, en Abigail Fisher. Predictors of Shorter Sleep in Early Childhood. Elsevier Science, 2014.

MLA citatie

McDonald, Laura, et al. Predictors of Shorter Sleep in Early Childhood. Elsevier Science, 2014.