Winkler, A. C., & McCuen, J. R. Writing the research paper: A handbook. Thomson.
Chicago Style aipamenaWinkler, Anthony C., and Jo Ray McCuen. Writing the Research Paper: A Handbook. Australia: Thomson.
MLA aipamenaWinkler, Anthony C., and Jo Ray McCuen. Writing the Research Paper: A Handbook. Thomson.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.