Rietz, A. E., & Wallbank, T. W. (1959). Tests for use with Living world history in its geographic setting, by T. Walter Wallbank and Arnold Fletcher. Scott, Foresman.
Chicago-referens (17:e uppl.)Rietz, Adelbert E., och T. Walter Wallbank. Tests for Use with Living World History in Its Geographic Setting, by T. Walter Wallbank and Arnold Fletcher. Chicago: Scott, Foresman, 1959.
MLA-referens (8:e uppl.)Rietz, Adelbert E., och T. Walter Wallbank. Tests for Use with Living World History in Its Geographic Setting, by T. Walter Wallbank and Arnold Fletcher. Scott, Foresman, 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.