1. Beach Christopher, The Cambridge Introduction to Twentieth-Century American Poetry (Cambridge Universit Press, Cambridge, 2003)
2. Chang Yaoxin, A Survey of American Literature (Nankai University Press, Tianjin, 2003)
3. Nie Zhaozhen, An Introduction to English Verse Rhythm (China Social Sciences Press, Beijing, 2007)
4. Lentricchia Frank, Robert Frost: modern Poetics and the Landscapes of Self. (Duke University Press, Durham, 1975)
5. Frost Robert, A Boy’s Will and North of Boston with an Introduction by William H. Pritchard and an Afterword by peter Davison (Signet Classic, New York, 2001)