Schult, V., & Wionzek, K. (2017). The German and Austrian navies in the Philippines, and their role in the Spanish-American War of 1898: A collection of original documents. National Historical Commission of the Philippines.
Chicago-referens (17:e uppl.)Schult, Volker, och Karl-Heinz Wionzek. The German and Austrian Navies in the Philippines, and Their Role in the Spanish-American War of 1898: A Collection of Original Documents. Manila: National Historical Commission of the Philippines, 2017.
MLA-referens (9:e uppl.)Schult, Volker, och Karl-Heinz Wionzek. The German and Austrian Navies in the Philippines, and Their Role in the Spanish-American War of 1898: A Collection of Original Documents. National Historical Commission of the Philippines, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.