Sequeira Ortiz, Z. (1980). Services to users: The retrieval of information and documentary languages.
استشهاد بنمط شيكاغوSequeira Ortiz, Zaida. Services to Users: The Retrieval of Information and Documentary Languages. 1980.
MLA استشهادSequeira Ortiz, Zaida. Services to Users: The Retrieval of Information and Documentary Languages. 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.