Mill, H. R. (1911). An elementary class-book of general geography. Macmillan.
Lua i Stíl Chicago (17ú heag.)Mill, Hugh Robert. An Elementary Class-book of General Geography. London ; Melbourne: Macmillan, 1911.
Lua MLA (8ú heag.)Mill, Hugh Robert. An Elementary Class-book of General Geography. Macmillan, 1911.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.