Cita APA (7th ed.)

Adams, R. G. (1975). A study of the relationship between economic and environmental variables for a region. University Microfilms International.

Cita Chicago (17th ed.)

Adams, Ronald George. A Study of the Relationship Between Economic and Environmental Variables for a Region. Ann Arbor: University Microfilms International, 1975.

Cita MLA (9th ed.)

Adams, Ronald George. A Study of the Relationship Between Economic and Environmental Variables for a Region. University Microfilms International, 1975.