Kiefer, W. J. (1961). Danger was no stranger. Queen's Work.
Lua i Stíl Chicago (17ú heag.)Kiefer, William J. Danger Was No Stranger. St. Louis, Mo.: Queen's Work, 1961.
Lua MLA (8ú heag.)Kiefer, William J. Danger Was No Stranger. Queen's Work, 1961.
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