GRAY, P. M. (1992). Object-oriented Databases: A Semantic Data Model Approach / Peter M.d. Gray, Krishnarao G. Kulkarni And Norman W. Paton. Prentice Hall.
Čikaški stil citiranja (17. izdanje)GRAY, Peter M.D. Object-oriented Databases: A Semantic Data Model Approach / Peter M.d. Gray, Krishnarao G. Kulkarni And Norman W. Paton. Prentice Hall, 1992.
MLA način citiranja (8. izdanje)GRAY, Peter M.D. Object-oriented Databases: A Semantic Data Model Approach / Peter M.d. Gray, Krishnarao G. Kulkarni And Norman W. Paton. Prentice Hall, 1992.
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