Cita APA (7th ed.)

Tidswell, W. V., & Barker, S. M. (1971). Quantitative methods: An approach to socio-economic geography. University Tutorial Press.

Cita Chicago (17th ed.)

Tidswell, William Vincent, i Sheila Margaret Barker. Quantitative Methods: An Approach to Socio-economic Geography. London: University Tutorial Press, 1971.

Cita MLA (8th ed.)

Tidswell, William Vincent, i Sheila Margaret Barker. Quantitative Methods: An Approach to Socio-economic Geography. University Tutorial Press, 1971.