When the U-boats came to America /
by William Bell Clark ; with illustrations.
APA Citation
Clark, W. Bell. (1929). When the U-boats came to America. Boston: Little, Brown.
MLA Citation
Clark, William Bell, 1889-1968. When the U-boats Came to America. Boston: Little, Brown, 1929.
Warning: These citations may not always be complete (especially for serials).