توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Northwest Irrigation and Development Congress Seattle, Wash. (1920). Proceedings of Northwest Irrigation and Development Congress: Held at Seattle, Washington, September 16-17, 1920.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Northwest Irrigation and Development Congress Seattle, Wash. Proceedings of Northwest Irrigation and Development Congress: Held at Seattle, Washington, September 16-17, 1920. [Seattle?, 1920.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Northwest Irrigation and Development Congress Seattle, Wash. Proceedings of Northwest Irrigation and Development Congress: Held at Seattle, Washington, September 16-17, 1920. 1920.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.