bradifield, r. M., keillor,jean-pierre, r., & pranell, m. O. (1977). The International year book and statesmen's who's who. IPC business press limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रbradifield, robert M., researcher keillor,jean-pierre, और mervyn O. pranell. The International Year Book and Statesmen's Who's Who. britain: IPC business press limited, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रbradifield, robert M., et al. The International Year Book and Statesmen's Who's Who. IPC business press limited, 1977.
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