@book{Cameron, Peter J._2008, address={New York}, edition={2nd ed}, title={Introduction to algebra}, volume={Oxford mathematics}, url={http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780191566226&uid=^u}, publisher={Oxford University Press}, author={Cameron, Peter J.}, year={2008} }
@book{Ledermann, Walter_Weir, Alan J._1996, address={Harlow}, edition={2nd ed}, title={Introduction to group theory}, volume={Longman mathematics series}, publisher={Longman}, author={Ledermann, Walter and Weir, Alan J.}, year={1996} }