Weyerhaeuser Company. (2000). Northwest Landing - Dupont property: Historic sites summary- research and exploration & protection measures. Weyerhaeuser Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Weyerhaeuser Company. Northwest Landing - Dupont Property: Historic Sites Summary- Research and Exploration & Protection Measures. [Federal Way, Wash.]: Weyerhaeuser Company, 2000.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Weyerhaeuser Company. Northwest Landing - Dupont Property: Historic Sites Summary- Research and Exploration & Protection Measures. Weyerhaeuser Company, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.