Paraphrasing is when you extract and summarize the important points from a source. When you paraphrase or summarize a source you have read, you must make it clear where the ideas have come from. When you summaries or paraphrase you would usually place your citation at the end of the sentence
The opportunities offered by drones must be balanced against the safety, security and privacy challenges they also present and a consultation has set out some steps to consider to achieve this balance.1
1 Department for Transport and Lord Ahmad of Wimbledon, 'Written statement to Parliament. Unlocking the UK’s high tech economy: consultation on the safe use of drones in the UK' (Gov.uk, 21 December 2016). <https://www.gov.uk/government/speeches/unlocking-the-uks-high-tech-economy-consultation-on-the-safe-use-of-drones-in-the-uk> accessed 18 April 2017.
When you create a footnote reference for a paraphrase you should include the page number.
It has been argued by Harris that the main considerations are the scale of the project, the cost and the duration of the work. 1
1 M Harris, Property Development in the Green Belt (Cambridge University Press 2016) 75.