REFERENCES
- Anttila, Raimo. 1972. An introduction to historical and comparative linguistics. New York: Macmillan.
- Costello, John R. 1982. “The absolute construction in Indo-European: A syntagmemic reconstruction.” The journal of Indo-European studies 10: 235–252.
- Costello, John R. 1984. “The periphrastic passive construction in Proto-Indo-European.” WORD 35. 125–161.
- Friedrich, Paul. 1975. Proto-Indo-European syntax. Journal of Indo-European studies monograph No. 1. Butte, Montana: Journal of Indo-European studies.
- Hoenigswald, Henry M. 1960. Language change and linguistic reconstruction. Chicago: University of Chicago Press.
- Lehmann, Winfred P. 1974. Proto-Indo-European syntax. Austin: University of Texas Press.
- Pike, Kenneth L. 1954. Language in relation to a unified theory of a nature of human behavior. Part I. Glendale, California: Summer Institute of Linguistics.
- Pike, Kenneth L. and Evelyn G. Pike. 1977. Grammatical analysis. Dallas: Summer Institute of Linguistics and University of Texas at Arlington.
- Pike, Kenneth L. and Evelyn G. Pike. 1982. Grammatical analysis. Second edition. Dallas: Summer Institute of Linguistics and University of Texas at Arlington.