Gaya APA
Pyle, M, A., Munoz, M, E. (1991).
Cliffs TOEFL preparation guide: test of English as a foreign language .
Lincoln:
Cliffs Notes.
Gaya MLA
Pyle, Michael, A.., Munoz, Mary, Ellen.
"Cliffs TOEFL preparation guide: test of English as a foreign language".
Lincoln:
Cliffs Notes,
1991.
Buku.