Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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