Sherman, D. B. (1998). Geology 98/99. Dushkin/McGraw-Hill.
Chicago Style aipamenaSherman, Douglas B. Geology 98/99. Guilford, Conn.: Dushkin/McGraw-Hill, 1998.
MLA aipamenaSherman, Douglas B. Geology 98/99. Dushkin/McGraw-Hill, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.