APA (7e ed.) Bronvermelding

ABLER, R. (1972). Spatial organization: The geographer's view of of the world. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

ABLER, Ronald. Spatial Organization: The Geographer's View of of the World. London: Prentice-Hall, 1972.

MLA (9e ed.) Bronvermelding

ABLER, Ronald. Spatial Organization: The Geographer's View of of the World. Prentice-Hall, 1972.