Gould

ABLER, R.; ADAMS, J. S.; GOULD, P. Spatial Organization. The Geographer’s View. Englewood Cliffs: Prentice-Hall, 1971.
GOULD, Peter; OLSSON, Gunnar (orgs.). A search for common ground. London: Pion, 1982.
GOULD, Peter. Becoming a geographer. Syracuse (N. Y.): Syracuse university press, 1999.
GOULD, Peter; WHITE, Rodney. Mental maps. Second edition ed. London: Routledge, 2005.