Barker, R. H. (1990). Case* method: Entity relationship modelling (1st ed, repr.). [S.n.].
Cita Chicago Style (17a ed.)Barker, Richard H. Case* Method: Entity Relationship Modelling. 1st ed, repr. Harlow: [S.n.], 1990.
Cita MLA (9a ed.)Barker, Richard H. Case* Method: Entity Relationship Modelling. 1st ed, repr. [S.n.], 1990.
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