What is a scholarly resource?
What is a complete reference?
The Box Hill Institute style of Harvard referencing is described in detail at http://libguides.bhtafe.edu.au/referencing
The best academic essays go through a number of stages of preparation:
Essay writing and report writing are very different skills.
Reports are very structured and signpost their different sections with hierarchical headings.They usually end with findings and recommendations.
Essays are more organic and don't usually use headings, but have their own conventions. They often argue a hypothesis, or debate a question.
Essays usually have logical introductory and concluding paragraphs.
In the body of the essay, the author usually steps through a logical series of points. They may wander into discussing the pros and cons of the arguments about each point, and give examples and illustrations, for a paragraph or two.
A good essay compares and contrasts the views of a number of sources. It will always reference these views appropriately by citing the sources. In the Harvard style of referencing, the writer gives a short "in-text citation" consisting of an author's name and date of publication, that acts as a signpost to the complete reference in the bibliography at the end of the essay.