Lua APA (7ú heag.)

Winston, B. J. (1991). Geography: Our country and our world. Scott, Foresman and Co..

Lua i Stíl Chicago (17ú heag.)

Winston, Barbara J. Geography: Our Country and Our World. Glenview: Scott, Foresman and Co., 1991.

Lua MLA (9ú heag.)

Winston, Barbara J. Geography: Our Country and Our World. Scott, Foresman and Co., 1991.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.