Wionzek, K., & Clark, T. (2000). Germany, the Philippines, and the Spanish-American War: Four accounts by officers of the Imperial German Navy. National Historical Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wionzek, Karl-Heinz, و Thomas Clark. Germany, the Philippines, and the Spanish-American War: Four Accounts by Officers of the Imperial German Navy. Manila: National Historical Institute, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Wionzek, Karl-Heinz, و Thomas Clark. Germany, the Philippines, and the Spanish-American War: Four Accounts by Officers of the Imperial German Navy. National Historical Institute, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.