Cita APA (7th ed.)

Bell, F. G. (2007). Engineering geology (2nd ed.). Elsevier.

Cita Chicago (17th ed.)

Bell, F. G. Engineering Geology. 2nd ed. Amsterdam: Elsevier, 2007.

Cita MLA (9th ed.)

Bell, F. G. Engineering Geology. 2nd ed. Elsevier, 2007.