Cita APA (7th ed.)
English, P. W., & Robinson, B. S. (1997). Geography: People and places in a changing world (2nd rev. ed.). West Pub..
Cita Chicago (17th ed.)
English, Paul Ward, i Brian S. Robinson. Geography: People and Places in a Changing World. 2nd rev. ed. St. Paul: West Pub., 1997.
Cita MLA (9th ed.)
English, Paul Ward, i Brian S. Robinson. Geography: People and Places in a Changing World. 2nd rev. ed. West Pub., 1997.
Atenció: Aquestes cites poden no estar 100% correctes.