Haggett, P. (1972). Geography: A modern synthesis. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Haggett, Peter. Geography: A Modern Synthesis. New York: Harper & Row, 1972.
Lua MLA (8ú heag.)Haggett, Peter. Geography: A Modern Synthesis. Harper & Row, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.