H.M. Gousha Company & Standard Oil Company of California. (1973). Street map of Spokane and Spokane Valley (1973 ed.). H.M. Gousha.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रH.M. Gousha Company और Standard Oil Company of California. Street Map of Spokane and Spokane Valley. 1973 ed. San Jose, Calif.: H.M. Gousha, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रH.M. Gousha Company और Standard Oil Company of California. Street Map of Spokane and Spokane Valley. 1973 ed. H.M. Gousha, 1973.
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