Hornibrook, E. A. (1923). Safe marriage: A return to sanity. William Heinemann.
Lua i Stíl Chicago (17ú heag.)Hornibrook, Ettie A. Safe Marriage: A Return to Sanity. London: William Heinemann, 1923.
Lua MLA (8ú heag.)Hornibrook, Ettie A. Safe Marriage: A Return to Sanity. William Heinemann, 1923.
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