Gaya APA
Writing Research Papers. (1984).
Illinois:
Scott, foresman and company.
Gaya Chicago
Writing Research Papers.
4th.
Illinois:
Scott, foresman and company,
1984.
Reference.
Gaya MLA
Writing Research Papers.
4th.
Illinois:
Scott, foresman and company,
1984.
Reference.
Gaya Turabian
Writing Research Papers.
Illinois:
Scott, foresman and company,
1984.
Reference.