Cita APA (7th ed.)

Estall, R. (1966). Industrial activity and economic geography (2nd ed.). Hutchinson.

Cita Chicago (17th ed.)

Estall, R.C. Industrial Activity and Economic Geography. 2nd ed. London: Hutchinson, 1966.

Cita MLA (9th ed.)

Estall, R.C. Industrial Activity and Economic Geography. 2nd ed. Hutchinson, 1966.