Expo (International Exhibitions Bureau) Spokane, Wash.). (1972). Environmental impact statement, Expo '74. Spokane World Exposition.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रExpo (International Exhibitions Bureau) Spokane, Wash.). Environmental Impact Statement, Expo '74. Spokane, Wash.: Spokane World Exposition, 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रExpo (International Exhibitions Bureau) Spokane, Wash.). Environmental Impact Statement, Expo '74. Spokane World Exposition, 1972.
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