APA

University of Oxford, . (1972). Research papers / School of Geography, University of Oxford. Oxford: .

Chicago

University of Oxford, . 1972. Research papers / School of Geography, University of Oxford. Oxford: .

Harvard

University of Oxford, . (1972). Research papers / School of Geography, University of Oxford. Oxford: .

MLA

University of Oxford, . Research papers / School of Geography, University of Oxford. Oxford: . 1972.