Schäfer, R. (2006). Under Ground: Buildings seeking shelter in the terrain. Topos.
Čikaški stil citiranja (17. izdanje)Schäfer, Robert. "Under Ground: Buildings Seeking Shelter in the Terrain." Topos 2006.
MLA način citiranja (8. izdanje)Schäfer, Robert. "Under Ground: Buildings Seeking Shelter in the Terrain." Topos, 2006.
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