Reliability analysis for an aggression analysis tool - Psychology bibliographies - in Harvard style

In-text: (Dodge et al., 1997)

Your Bibliography: Dodge, K., Lochman, J., Harnish, J., Bates, J. and et al, 1997. Reactive and proactive aggression in school children and psychiatrically impaired chronically assaultive youth. Journal of Abnormal Psychology, 106(1), pp.37-51.

In-text: (Gliem and Gliem, 2003)

Your Bibliography: Gliem, J. and Gliem, R., 2003. Calculating, Interpreting, and Reporting Cronbach’s Alpha Reliability Coefficient for Likert-Type Scales. [online] Pioneer. Available at: <http://pioneer.netserv.chula.ac.th/~ppongsa/2013605/Cronbach.pdf> [Accessed 18 January 2015].

In-text: (Little et al., 2003)

Your Bibliography: Little, T., Brauner, J., Jones, S., Nock, M. and Hawley, P., 2003. Rethinking Aggression: A Typological Examination of the Functions of Aggression. Merrill-Palmer Quarterly, 49(3), pp.343-369.