Lua APA (7ú heag.)
Ullrich, K., & Kachele, K. (2014). The Iowa state fair. University Of Iowa Press.
Lua i Stíl Chicago (17ú heag.)
Ullrich, Kurt, agus Kristina Kachele. The Iowa State Fair. Iowa City, Iowa: University Of Iowa Press, 2014.
Lua MLA (9ú heag.)
Ullrich, Kurt, agus Kristina Kachele. The Iowa State Fair. University Of Iowa Press, 2014.
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