Webber, B., & Ramsey, G. R. (1987). Postmarked Washington: An encyclopedia of postal history covering eleven counties of eastern Washington based on the research of the late Guy Reed Ramsey and other sources. Ye Galleon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWebber, Bert, और Guy Reed Ramsey. Postmarked Washington: An Encyclopedia of Postal History Covering Eleven Counties of Eastern Washington Based on the Research of the Late Guy Reed Ramsey and Other Sources. Fairfield, Wash.: Ye Galleon Press, 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWebber, Bert, और Guy Reed Ramsey. Postmarked Washington: An Encyclopedia of Postal History Covering Eleven Counties of Eastern Washington Based on the Research of the Late Guy Reed Ramsey and Other Sources. Ye Galleon Press, 1987.
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