Gaya APA
Stupak, S, A. (1995).
The prentice hall regents practice TOEIC test : answer key .
Englewood Cliffs, New Jersey:
Prentice Hall Regents.
Gaya MLA
Stupak, Steven, A..
"The prentice hall regents practice TOEIC test : answer key".
Englewood Cliffs, New Jersey:
Prentice Hall Regents,
1995.
BUKU.