Sherman, D. B. (1998). Geology 98/99. Dushkin/McGraw-Hill.
Cita Chicago (17th ed.)Sherman, Douglas B. Geology 98/99. Guilford, Conn.: Dushkin/McGraw-Hill, 1998.
Cita MLA (8th ed.)Sherman, Douglas B. Geology 98/99. Dushkin/McGraw-Hill, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.