Zeller, M. E. (1992). A festschrift in honor of Vernon W. Hughes: Yale University, 13 April 1991. Singapore: World Scientific.
Chicago Stili AlıntıZeller, Michael E. A Festschrift in Honor of Vernon W. Hughes: Yale University, 13 April 1991. Singapore: World Scientific, 1992.
MLA AlıntıZeller, Michael E. A Festschrift in Honor of Vernon W. Hughes: Yale University, 13 April 1991. Singapore: World Scientific, 1992.
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