Não informado. (1968). British Journal of Sports Medicine. British Association of Sports and Medicine.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. British Journal of Sports Medicine. Loughborough, Inglaterra: British Association of Sports and Medicine, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. British Journal of Sports Medicine. British Association of Sports and Medicine, 1968.
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