For APA referencing, the reference list at the end of your assignment needs to be single-spaced. Each reference needs to have a hanging indent with a single line spacing between each reference, as shown below:
Hales, M. (2012). Community health nursing. In A. Berman, S. Snyder, B. Kozier, G. Erb, T. Levett- Jones, T. Dwyer,…D. Stanley (Eds.), Kozier and Erb’s fundamentals of nursing (1st Australian ed., Vol. 2, pp. 123-132). Frenchs Forest, Australia: Pearson.
Hubbard, J., Thomas, C., & Varnham, S. (2010). Principles of law for New Zealand business students (4th ed.). Auckland, New Zealand: Pearson.
Stulz, J. (2006). Integrating exposure therapy and analytic therapy in trauma treatment. American Journal of Orthopsychiatry, 76(4), 482-488. doi:10.1037/0002-9432.76.4.482
Steps to format your reference list

This opens up an options box. Select Hanging from the drop-down box under Indentation – Special.
Select Single from the drop-down box under Line spacing.
Note: Check with your tutor what line spacing they would prefer.

Click OK.