@article{49694,
      recid = {49694},
      author = {Pittaro, John Michael. and Green, Alexandaer,},
      title = {Primer curso de español,},
      publisher = {D. C. Heath and Company},
      address = {Boston,},
      pages = {xviii, 571 p.},
      year = {1938},
      url = {http://library.usi.edu/record/49694},
}