@book{ BB06545730, author = "O'Grady, William and Archibald, John and Katamba, Francis", title = "Contemporary linguistics : an introduction", publisher = "Longman", year = "2011", edition = "2nd, [U.K.] ed", series = "Learning about language", number = "", URL = "https://ci.nii.ac.jp/ncid/BB06545730" }