Barry, Vincent E. and Douglas J. Soccio
[1976]  Practical Logic, Holt, Rinehart and Winston, New York, Third Edition 1988
[Chapter 3]


Copi, Irving M.
[1953]  Introduction to Logic, Macmillan, New York, Sixth Edition 1982
[Chapter 4]


Formey, Jean Louis
[1745-1772]  Article "Definition" in Diderot-d'Alembert, Encyclopédie
ou dictionnaire raisonné des sciences, des arts et des métiers


Robinson, Richard
[1954]  Definition, Oxford University Press, Oxford, 1972


Rorabacher, Louise E. with Georgia Dunbar and Clement Dunbar
[1988]  Assignments in Exposition, Harper & Row, New York, Ninth Edition
[Unit 15 : Definition]


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