@article{61718,
      author = {Brink, Raymond W.},
      url = {http://library.usi.edu/record/61718},
      title = {Plane trigonometry,},
      publisher = {D. Appleton-Century},
      recid = {61718},
      pages = {xii, 226 p.},
      address = {New York,},
      year = {1940},
}