Swan, Michael
The new cambridge english course 3
Cambridge University Press, 1992
 Buku Teks SO
Swan, Michael
The Cambridge English course
Cambridge University Press, 1987
 Buku Teks
Swan, Michael
The new Cambridge English course. Student 4, Upper-intermediate
Cambridge University Press, 1993
 Buku Teks SO
The New Cambridge bibliography of English literature Vol. 4; 1900-1950
edited by I.R. Willison
Cambridge University Press, 1972
 Buku Referensi
The New Cambridge bibliography of English literature; Vol. 2: 1660-1800
edited by George Watson
Cambridge University Press, 1971
 Buku Referensi