Cita APA (7a ed.)

Slaymaker, O., & Spencer, T. (1998). Physical geography and global environmental change. Longman.

Cita Chicago Style (17a ed.)

Slaymaker, Olav, y Tom Spencer. Physical Geography and Global Environmental Change. Edinburgh, United Kingdom: Longman, 1998.

Cita MLA (9a ed.)

Slaymaker, Olav, y Tom Spencer. Physical Geography and Global Environmental Change. Longman, 1998.