APA aipamena

Marius, R. (1999). A writer's companion (4th ed.). McGraw-Hill College.

Chicago Style aipamena

Marius, Richard. A Writer's Companion. 4th ed. Boston: McGraw-Hill College, 1999.

MLA aipamena

Marius, Richard. A Writer's Companion. 4th ed. McGraw-Hill College, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.