Gaya APA
New Opportunities Education for Life. (2007).
Harlow:
Pearson education.
Gaya Chicago
New Opportunities Education for Life.
Cet. 2.
Harlow:
Pearson education,
2007.
.
Gaya MLA
New Opportunities Education for Life.
Cet. 2.
Harlow:
Pearson education,
2007.
.
Gaya Turabian
New Opportunities Education for Life.
Harlow:
Pearson education,
2007.
.