Gaya APA
New Longman Science Workbook 4. (2008).
:
Pearson Longman.
Gaya Chicago
New Longman Science Workbook 4.
.
:
Pearson Longman,
2008.
Text.
Gaya MLA
New Longman Science Workbook 4.
.
:
Pearson Longman,
2008.
Text.
Gaya Turabian
New Longman Science Workbook 4.
:
Pearson Longman,
2008.
Print.