Fries, P. H., Cummings, M., Lockwood, D., & Spruiell, W. (2002). Relations and functions within and around language. Continuum.
Chicago-tyylinen lähdeviittausFries, Peter H., Michael Cummings, David Lockwood, ja William Spruiell. Relations and Functions Within and Around Language. London: Continuum, 2002.
MLA-viiteFries, Peter H., et al. Relations and Functions Within and Around Language. Continuum, 2002.
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