Ball, B. (2000). Assessing your career: Time for change? British Psychological Society.
Chicago Style (17. basım) AtıfBall, Ben. Assessing Your Career: Time for Change? Leiceste: British Psychological Society, 2000.
MLA (8th ed.) AtıfBall, Ben. Assessing Your Career: Time for Change? British Psychological Society, 2000.
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