Baring-Gould, S. (1911). Cliff castles and cave dwellings of Europe (1a. ed.). Seeley and Co.
Chicago-čujuhus (17. p.)Baring-Gould, Sabine. Cliff Castles and Cave Dwellings of Europe. 1a. ed. Londres: Seeley and Co, 1911.
MLA-čujuhus (9. p.)Baring-Gould, Sabine. Cliff Castles and Cave Dwellings of Europe. 1a. ed. Seeley and Co, 1911.
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