Spokane County Noxious Weed Control Board. (2018). Identifying and controlling noxious weeds in Spokane County. Spokane County Noxious Weed Control Board.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpokane County Noxious Weed Control Board. Identifying and Controlling Noxious Weeds in Spokane County. Spokane, WA: Spokane County Noxious Weed Control Board, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpokane County Noxious Weed Control Board. Identifying and Controlling Noxious Weeds in Spokane County. Spokane County Noxious Weed Control Board, 2018.
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