Political science

Does Britain need a written constitution? this is the question thats needs to be answered to write the essay. 1000 words requirement. At least 5 sources cited but not
online or any articles, must be books. I have gathered five books from my university library; book 1 title: Austerity and Political Choice in Britain (Written By
Clarke, Harold D.;Kellner, Peter;Stewart, Marianne
Published By Palgrave Macmillan in 2015).
Book 2: British Politics, (Written By Grayson, Richard S.
Published By Oneworld Publications in 2016). Book 3: Democratizing Europe, (Written By Vauchez, Antoine
Published By Palgrave Macmillan in 2015)
Book 4: New Totalitarian Temptation, (Written By Huizinga, Todd
Published By Encounter Books in 2016)
Book 5: Political Campaign Communication (Written By Trent, Judith S.;Friedenberg, Robert V.;Denton, Robert E., Jr.
Published By Rowman & Littlefield Publishers in 2011)

these books are the ones that I have found in the library at my university. My professor only wants sources to be found and used from books that are in the university
library. I have mentioned a couple of books above, however i am not sure if they are helpful, or if you can find these books online to use as a preference. Please try
to use these sources in the essay to answer the question. I am sure you can find these books online as a Ebook copy. My university library is called
https://www.worldcat.org/