Spector, P. E. (1981). Research designs. Sage Publications.
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Chicago Style (17th ed.) Citation
Spector, Paul E. Research Designs. Beverly Hills: Sage Publications, 1981.
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ציטוט MLA
Spector, Paul E. Research Designs. Sage Publications, 1981.
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אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.