Whichever referencing style is used, there is information which needs to be relayed to the reader of your work such as:
In other words the information required is:
The various referencing styles (APA, MLA, AMA, Chicago. etc.) list the rules on how this information will be presented in your work, both in-text and at the end of your work in a reference list. This includes formatting advice such as capitalization, italicization, and punctuation.