Foley, James D.
Theoretical morphology of the French verb
John Benjamins B. V., 1979
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Juilland, Alphonse
The English verb system
Mouton, 1973
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Graham, Stuart
The french verb book
Cambridge University Press , 1994
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Poutsma, H.
Mood and tense of the English verb / H. Poutsma
P. Noordhoff, 1922
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Karl Anderbeck
The malayic-speaking orang laut : dialects and directions for research / Karl Anderbeck
University of Indonesia, Faculty of Humanities, 2012
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