ISBN-13: 9781587981265 / Angielski / Miękka / 2002 / 381 str.
Knight's classic study has a long history: first published in 1921, reissued 1933, reprinted 1948 and 1957, and cited in Books for College Libraries, 3d ed. 1971. Annotation c. Book News, Inc., Portland, OR (booknews.com).