Perry, J. E. (1996). An introduction to object-oriented design in C++Jo Ellen Perry, Harold D. Levin (ada CD). Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Perry, Jo Ellen. An Introduction to Object-oriented Design in C++Jo Ellen Perry, Harold D. Levin (ada CD). Addison-Wesley, 1996.
Lua MLA (8ú heag.)Perry, Jo Ellen. An Introduction to Object-oriented Design in C++Jo Ellen Perry, Harold D. Levin (ada CD). Addison-Wesley, 1996.
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