Lua APA (7ú heag.)
Holden, J. (2012). An introduction to physical geography and the environment (3rd ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)
Holden, Joseph. An Introduction to Physical Geography and the Environment. 3rd ed. Harlow: Pearson, 2012.
Lua MLA (9ú heag.)
Holden, Joseph. An Introduction to Physical Geography and the Environment. 3rd ed. Pearson, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.