APA (7th ed.) Zitazioa
Ross, R. G. Principles of the Business Rule Approach. Addison-Wesley.
Chicago Style (17th ed.) Zitazioa
Ross, Ronald G. Principles of the Business Rule Approach. Boston, EUA: Addison-Wesley.
MLA (9th ed.) Zitazioa
Ross, Ronald G. Principles of the Business Rule Approach. Addison-Wesley.
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