APA
Ludwig E., . (1935). Hindenburg. Chicago ; Philadelphia ; Toronto: John C. Winston Company.
Chicago
Ludwig Emil, . 1935. Hindenburg. Chicago ; Philadelphia ; Toronto: John C. Winston Company.
Harvard
Ludwig E., . (1935). Hindenburg. Chicago ; Philadelphia ; Toronto: John C. Winston Company.
MLA
Ludwig Emil, . Hindenburg. Chicago ; Philadelphia ; Toronto: John C. Winston Company. 1935.