Gaya APA
HUGHES, C, B.
(1994).
Top the TOEFL test :
.
Englewood Cliffs, N.J.:
Prentice Hall Regents.
Gaya MLA
HUGHES, Carla, Blyth.
"Top the TOEFL test :".
Englewood Cliffs, N.J.:
Prentice Hall Regents,
1994.
Buku.