Cita APA (7th ed.)

Johnson, J. H. (1972). Urban geography: An introductory analysis. Pergamon.

Cita Chicago (17th ed.)

Johnson, James H. Urban Geography: An Introductory Analysis. Oxford: Pergamon, 1972.

Cita MLA (9th ed.)

Johnson, James H. Urban Geography: An Introductory Analysis. Pergamon, 1972.