Text ( visual ) : unmediated Consonantal sound change in American English : an analysis of clustered sibilants / Wiebke H. Ahlers. -- : hardback. -- Cambridge : Cambridge University Press , 2023. -- xii, 233 p. : ill., map ; 24 cm. -- (Studies in English language). -- Includes bibliographical references (p. 218-231) and index. -- ISBN 9781316512722 ; (BD04111880) ; https://ci.nii.ac.jp/ncid/BD04111880 Author Heading(s): Ahlers, Wiebke H.. -- Classification(s): DC23 : 427.973. -- Subject Heading(s): LCSH : English language -- United States -- Consonants ; LCSH : English language -- United States -- Phonology