Cita APA (7a ed.)

Coppock, J. T., & Wilson, C. B. Environmental quality. Scottish Academic Press.

Cita Chicago Style (17a ed.)

Coppock, John T., y Christopher B. Wilson. Environmental Quality. Edinburgh : 1974: Scottish Academic Press.

Cita MLA (9a ed.)

Coppock, John T., y Christopher B. Wilson. Environmental Quality. Scottish Academic Press.