REFERENCES
- Akmajian, Adrian, Richard A. Demers and Robert M. Harnish. 1984. Linguistics: An Introduction to Language and Communication. MIT: Cambridge, Mass.
- Gleason, H. A. 1961. An Introduction to Descriptive Linguistics. New York: Holt, Rinehart and Winston.
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- Goodall, Grant. 1987. Parallel Structures in Syntax. Cambridge Studies in Linguistics. 46. Cambridge: Cambridge University Press.
- Hockett, Charles Francis. 1958. A Course in Modern Linguistics. New York: Macmillan.