APA-Zitierstil (7. Ausg.)

Huisman, A. (2012). Spherical Bird Observatory: A former bunker of the Dutch Waterline was turned into a bird observatory. Topos.

Chicago-Zitierstil (17. Ausg.)

Huisman, Arie. "Spherical Bird Observatory: A Former Bunker of the Dutch Waterline Was Turned into a Bird Observatory." Topos 2012.

MLA-Zitierstil (8. Ausg.)

Huisman, Arie. "Spherical Bird Observatory: A Former Bunker of the Dutch Waterline Was Turned into a Bird Observatory." Topos, 2012.