Spokane County Noxious Weed Control Board. (2018). Identifying and controlling noxious weeds in Spokane County. Spokane County Noxious Weed Control Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Spokane County Noxious Weed Control Board. Identifying and Controlling Noxious Weeds in Spokane County. Spokane, WA: Spokane County Noxious Weed Control Board, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Spokane County Noxious Weed Control Board. Identifying and Controlling Noxious Weeds in Spokane County. Spokane County Noxious Weed Control Board, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.