Walters, R. G. (1949). Workbook for Word studies (3rd edition.). South-Western Publishing Company.
Chicago-referens (17:e uppl.)Walters, R. G. Workbook for Word Studies. 3rd edition. Cincinnati, Ohio: South-Western Publishing Company, 1949.
MLA-referens (8:e uppl.)Walters, R. G. Workbook for Word Studies. 3rd edition. South-Western Publishing Company, 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.