Seewald, F; Blenk, H & Liebers, F. The 1926 German seaplane contest. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc65292/. Accessed May 5, 2015.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.