@book{lamport1994,
  author    = {Leslie Lamport},
  title     = {LaTeX: A Document Preparation System},
  year      = {1994},
  publisher = {Addison-Wesley},
}

@book{rowling1997,
  author    = {J.K. Rowling},
  title     = {Harry Potter and the Philosopher's Stone},
  year      = {1997},
  publisher = {Bloomsbury Publishing},
  address   = {London},
  isbn      = {978-0747532699},
  language  = {English}
}