Lua APA (7ú heag.)
Thomsen, C. E., & Robert W. Christopherson. (2015). Applied physical geography: Geosystems in the laboratory (9th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)
Thomsen, Charles E., agus Robert W. Christopherson. Applied Physical Geography: Geosystems in the Laboratory. 9th ed. Boston: Pearson, 2015.
Lua MLA (9ú heag.)
Thomsen, Charles E., agus Robert W. Christopherson. Applied Physical Geography: Geosystems in the Laboratory. 9th ed. Pearson, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.