Törmä, T. (1957). Malignant tumours of the spine and the spinal extradural space: A study based on 250 histologically verified cases.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTörmä, Tapio. Malignant Tumours of the Spine and the Spinal Extradural Space: A Study Based on 250 Histologically Verified Cases. Helsinki, 1957.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTörmä, Tapio. Malignant Tumours of the Spine and the Spinal Extradural Space: A Study Based on 250 Histologically Verified Cases. 1957.
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