Clark, C. (1977). Population growth and land use (2nd ed.). Macmillan.
Cita Chicago (17th ed.)Clark, Colin. Population Growth and Land Use. 2nd ed. London: Macmillan, 1977.
Cita MLA (9th ed.)Clark, Colin. Population Growth and Land Use. 2nd ed. Macmillan, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.