Gaya APA
Writing a Research Paper. (1987).
USA:
University of Pittsburgh Press.
Gaya Chicago
Writing a Research Paper.
.
USA:
University of Pittsburgh Press,
1987.
.
Gaya MLA
Writing a Research Paper.
.
USA:
University of Pittsburgh Press,
1987.
.
Gaya Turabian
Writing a Research Paper.
USA:
University of Pittsburgh Press,
1987.
.