Cita APA (7th ed.)

Estall, R. C. (1961). Industrial activity and economic geography. Hutchinson.

Cita Chicago (17th ed.)

Estall, R. C. Industrial Activity and Economic Geography. London: Hutchinson, 1961.

Cita MLA (9th ed.)

Estall, R. C. Industrial Activity and Economic Geography. Hutchinson, 1961.