Não informado. (1977). IABSE Journal. International Association for Bridge and Structural Engineering.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. IABSE Journal. Zurich, Suíça: International Association for Bridge and Structural Engineering, 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. IABSE Journal. International Association for Bridge and Structural Engineering, 1977.
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