Humphreys, A. (1980). Daniel Defoe Robinson Crusoe. Longman Group.
Chicago Style aipamenaHumphreys, A.R. Daniel Defoe Robinson Crusoe. Harlow: Longman Group, 1980.
MLA aipamenaHumphreys, A.R. Daniel Defoe Robinson Crusoe. Longman Group, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.