Schäfer, R. (2006). Under Ground: Buildings seeking shelter in the terrain. Topos.
Chicago-Zitierstil (17. Ausg.)Schäfer, Robert. "Under Ground: Buildings Seeking Shelter in the Terrain." Topos 2006.
MLA-Zitierstil (8. Ausg.)Schäfer, Robert. "Under Ground: Buildings Seeking Shelter in the Terrain." Topos, 2006.
警告：这些引文格式不一定是100％准确.