Poppe, M. (1999). Rapid district appraisal for regional development planning. Spring-Centre.
Cita Chicago (17th ed.)Poppe, Manfred. Rapid District Appraisal for Regional Development Planning. Dortmund, Germany: Spring-Centre, 1999.
Cita MLA (9th ed.)Poppe, Manfred. Rapid District Appraisal for Regional Development Planning. Spring-Centre, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.