Herbert, A. P., & Lewis, S. (1931). The water gipsies. Doubleday, Doran & company, inc..
Lua i Stíl Chicago (17ú heag.)Herbert, A. P., agus Sinclair Lewis. The Water Gipsies. Garden City, N. Y.: Doubleday, Doran & company, inc., 1931.
Lua MLA (8ú heag.)Herbert, A. P., agus Sinclair Lewis. The Water Gipsies. Doubleday, Doran & company, inc., 1931.
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