@article{Halliday67-parts1-2,
  author	= {Halliday, Michael A. K.},
  year		= {1967},
  title		= {Notes on transitivity and theme in English --- Parts 1 and 2},
  journal	= {Journal of Linguistics},
  volume	= {3},
  pages		= {37--81 and 199--244}
}