References

Bickford, J. Albert. 1998. Tools for Analyzing the World’s Languages Morphology and Syntax. Summer Institute of Linguistics, Inc.
Fromkin, Victoria., Rodman, Roert and Hyam, Nina. 2003. An Introduction to Language. Heinly, a part of Thomson Corporation.
Gatherer, W.A. 1986. The Student’s Handbook of Modern English. PT Gramedia, Jakarta.
Haden Elgin, Suzette. 1979. What is Linguistics? Prentice Hall, Inc. London.
Richards, Jack., Platt, John and Weber, Heidi. 1985. Longman Dictionary of Applied Linguistics. Longman.

Todd, Loreto. 1987. An Introduction to Linguistics. York Press.