APA
International Geographical Union. Commission for the Study of Terran ces and Planation Surfaces, International Geographical Congress 1. W. 1., . (1952). Septième rapport. Liège: Belgium, H. Vailiant- Carmanne.
Chicago
International Geographical Union. Commission for the Study of Terran ces and Planation Surfaces, International Geographical Congress 17th Washington 1952, . 1952. Septième rapport. Liège: Belgium, H. Vailiant- Carmanne.
Harvard
International Geographical Union. Commission for the Study of Terran ces and Planation Surfaces, International Geographical Congress 1. W. 1., . (1952). Septième rapport. Liège: Belgium, H. Vailiant- Carmanne.
MLA
International Geographical Union. Commission for the Study of Terran ces and Planation Surfaces, International Geographical Congress 17th Washington 1952, . Septième rapport. Liège: Belgium, H. Vailiant- Carmanne. 1952.