APA Style
Writing Research Papers. (2000).
Islamabad:
NBF.
Chicago Style
Writing Research Papers.
.
Islamabad:
NBF,
2000.
Book.
MLA Style
Writing Research Papers.
.
Islamabad:
NBF,
2000.
Book.
Turabian Style
Writing Research Papers.
Islamabad:
NBF,
2000.
Book.