Electrophilic addition of bromine to an alkene
<a href="//commons.wikimedia.org/wiki/User:Benjah-bmm27" title="User:Benjah-bmm27">Benjah-bmm27</a>
<cite class="book" style="font-style:normal">(2012) <i> Organic Chemistry</i> (2nd ed.), Oxford University Press, pp. 428  <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-0-19-927029-3" title="Special:BookSources/978-0-19-927029-3">978-0-19-927029-3</a>. </small></cite>