Levy, Michael, 1950-
Cambridge University Press, 2016
Buku Teks
Norton, Donna E.
Merril; A Bell and Howell Information, 1987
Koleksi Publik
Norton, Donna E.
Merril; A Bell and Howell Information, 1987
Buku Teks
edited by Louis G. Locke, William M. Gibson, George Arms
Holt, Rinehart and Winston, 1959
Buku Teks
Tomlinson, Carl M.
Allyn and Bacon, 2002
Buku Referensi