Rush, T., Gamon, J., & Ponzetti, J. (1999). Field guide to Washington's rare plants. Washington State Dept. of Natural Resources ; Spokane District, Bureau of Land Management.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rush, Tracy, John Gamon, و Jeanne Ponzetti. Field Guide to Washington's Rare Plants. [Olympia] : [Spokane]: Washington State Dept. of Natural Resources ; Spokane District, Bureau of Land Management, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rush, Tracy, et al. Field Guide to Washington's Rare Plants. Washington State Dept. of Natural Resources ; Spokane District, Bureau of Land Management, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.