Lua APA (7ú heag.)
Johnsgard, P. A. (2014). Seasons of the tallgrass prairie: A Nebraska year. University of Nebraska Press.
Lua i Stíl Chicago (17ú heag.)
Johnsgard, Paul A. Seasons of the Tallgrass Prairie: A Nebraska Year. Lincoln, Nebraska ; London: University of Nebraska Press, 2014.
Lua MLA (9ú heag.)
Johnsgard, Paul A. Seasons of the Tallgrass Prairie: A Nebraska Year. University of Nebraska Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.