Não informado. (1970). International Journal of Sport Psychology. International Society of Sports Psychology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Sport Psychology. Rome: International Society of Sports Psychology, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Sport Psychology. International Society of Sports Psychology, 1970.
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