Mayer, Frederick, author
American Book Company, 1951
Buku Teks
by James A. Richards ... [et.al.]
Addison-Wesley, 1962
Buku Teks
edited by Allen Cunningham; preface by Robert Maxwell
Routledge, 1998
Buku Teks
Bertens, K. (Kees), author
Daras, 2005
Buku Teks
Mayer, Frederick, author
American Book Company, 1951
Buku Klasik