風力
OKeeffe, Aoife; Haggett, Claire (2012). “An investigation into the potential barriers facing the development of offshore wind energy in Scotland: Case study – Firth of Forth offshore wind farm”. Renewable and Sustainable Energy Reviews 16 (6): 3711. doi:10.1016/j.rser.2012.03.018. https://windenergyigert.umass.edu/sites/windenergyigert/files/OFFSHORE%20WIND%20SCOTLAND%202012.pdf.