Clark and Clark 1987

Clark, Stephen and Clark, Dawn. 1987. Sio Grammar Essentials. Unpublished Manuscript. 107pp.

@misc{sClarkClarkSio,
  author       = {Clark, Stephen and Clark, Dawn},
  howpublished = {Unpublished Manuscript},
  pages        = {107},
  title        = {Sio Grammar Essentials},
  year         = {1987}
}