Cita APA

Holt-Jensen, A., & Holt-Jensen, A. (2009). Geography, history and concepts: A student's guide (4. edition.). Los Angeles: SAGE.

Citación estilo Chicago

Holt-Jensen, Arild, y Arild Holt-Jensen. Geography, History and Concepts: A Student's Guide. 4. edition. Los Angeles: SAGE, 2009.

Cita MLA

Holt-Jensen, Arild, y Arild Holt-Jensen. Geography, History and Concepts: A Student's Guide. 4. edition. Los Angeles: SAGE, 2009.