Wallum, M. K. (1973). The syntax and semantics of the English modal verbs from the late tenth to the fifteenth century.
Chicago Style (17th ed.) CitationWallum, Mary Karen. The Syntax and Semantics of the English Modal Verbs from the Late Tenth to the Fifteenth Century. 1973.
MLA (8th ed.) CitationWallum, Mary Karen. The Syntax and Semantics of the English Modal Verbs from the Late Tenth to the Fifteenth Century. 1973.
Warning: These citations may not always be 100% accurate.