Spence, J. T. (1983). Achievement and achievement motives: Psychological and sociological approaches. W.H. Freeman.
Citazione stile Chigago Style (17a edizione)Spence, Janet T. Achievement and Achievement Motives: Psychological and Sociological Approaches. San Francisco: W.H. Freeman, 1983.
Citatione MLA (9a ed.)Spence, Janet T. Achievement and Achievement Motives: Psychological and Sociological Approaches. W.H. Freeman, 1983.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.