Online encyclopaedias are great for short, concise and correct information.
It is important to provide evidence of using a variety of reliable resources. Use the online Reference Generator available through the Portal to create your citations. Make sure you alphabetically sort them afterwards.
A sample bibliography for 3 resources suggested on these pages would look like:
Krentz, P 2018, 'Greece, Ancient' , World Book Student, World Book, Chicago, viewed 13 February 2018,
Stuttard, S 2014, A history of ancient Greece in fifty lives, Thames & Hudson, London.
Types of Government in Ancient Greece n.d., Prospect Ridge Academy, pdf, accessed 13 February 2018, <http://www.prospectridgeacademy.org/ourpages/auto/2016/9/20/48547756/9-20-16_HOMEWORK-Governments%20Article.pdf>.