Sorenson, S. (2002). How to write research papers (Third edition.). Thomson/Arco.
Chicago Style aipamenaSorenson, Sharon. How to Write Research Papers. Third edition. Australia ; Lawrenceville, NJ: Thomson/Arco, 2002.
MLA aipamenaSorenson, Sharon. How to Write Research Papers. Third edition. Thomson/Arco, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.