Schwartz, M. L. (1973). Barriers Islands. Dowden, Hutchinson&Ross.
Chicago Style aipamenaSchwartz, Maurice L. Barriers Islands. Pennsylvania: Dowden, Hutchinson&Ross, 1973.
MLA aipamenaSchwartz, Maurice L. Barriers Islands. Dowden, Hutchinson&Ross, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.