Cita APA (7th ed.)

Baring-Gould, S. (1911). Cliff castles and cave dwellings of Europe (1a. ed.). Seeley and Co.

Cita Chicago (17th ed.)

Baring-Gould, Sabine. Cliff Castles and Cave Dwellings of Europe. 1a. ed. Londres: Seeley and Co, 1911.

Cita MLA (9th ed.)

Baring-Gould, Sabine. Cliff Castles and Cave Dwellings of Europe. 1a. ed. Seeley and Co, 1911.