Germany: NeunundzwanzigSechs Verlag. 2010. ISBN 978-3-9811615-5-7 (德语). Brown, Ashley; Reed, Jonathan. The Air Fighters. Harrisburg: National Historical Society
Berger (1871–1931) A.B.Frank - Albert Bernhard Frank (1839–1900) A.B.Graf - Alfred Byrd Graf (1901–2001) A.B.Jacks. - 阿尔伯特·布鲁斯·杰克逊 (1876–1947) A.B.Nickels
spravochnik. Moscow 2004. ISBN 5-93165-107-1 pp. 22 & 34 Grenville, John Ashley Soames. The Major International Treaties, 1914-1973: A History and Guide