Simon Fraser University. Cognitive Science Programme, ebrary, Inc, & Levine, R. (1992). Formal grammar: Theory and implementation. Oxford University Press.
Čikaški stil citiranja (17. izdanje)Simon Fraser University. Cognitive Science Programme, Inc ebrary, i Robert Levine. Formal Grammar: Theory and Implementation. New York: Oxford University Press, 1992.
MLA način citiranja (9. izdanje)Simon Fraser University. Cognitive Science Programme, et al. Formal Grammar: Theory and Implementation. Oxford University Press, 1992.
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