(1971). Webster's seventh new collegiate dictionary. Massachusetts: G.&C. Merriam.
Chicago Style aipamenaWebster's Seventh New Collegiate Dictionary. Massachusetts: G.&C. Merriam, 1971.
MLA aipamenaWebster's Seventh New Collegiate Dictionary. Massachusetts: G.&C. Merriam, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.