Question 1 can be skipped.
Harvard Referencing is must.
Must satisfy all the requirements.
https://onlinelibrary.wiley.com/doi/pdf/10.1002/sres.2709?casa_token=HsCrP-WCL7kAAAAA:cKN3cE9Q9eR5YZJBoQREVeAG-HMwMaeUWJfFgbjhco6oROvC_d2nFcsAImhZRrn-Z2mZFqJaoZsgOoI7
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