You may find it helpful to look at examples of references from your subject area. Remember, the differences in order, format and punctuation are to do with the reference style, however, there are generally common elements that you need to have.
A book reference will look similar to this:
Greed, C. (1996) Introducing Town Planning. 2nd ed. Harlow: Longman
A chapter in an edited book will look similar to this:
Campbell, S and Fainstein, S (2003) Introduction: The Structure and Debates of Planning Theory. In: Campbell, S and Fainstein, S (Eds). Readings in Planning Theory. 2nd ed. Oxford: Blackwell, pp.1-16
A journal article will look similar to this:
Nilsson, K. L. (2007) 'Managing Complex Spatial Planning Processes', Planning Theory & Practice, 8(4), pp. 431-447.