Bhagwat, S. B., & Berg, R. C. (1991). Benefits and costs of geologic mapping programs in Illinois: Case study of Boone and Winnebago Counties and its statewide applicability.
Chicago-Zitierstil (17. Ausg.)Bhagwat, Subhash B., und Richard C. Berg. Benefits and Costs of Geologic Mapping Programs in Illinois: Case Study of Boone and Winnebago Counties and Its Statewide Applicability. Champaign, Ill, 1991.
MLA-Zitierstil (9. Ausg.)Bhagwat, Subhash B., und Richard C. Berg. Benefits and Costs of Geologic Mapping Programs in Illinois: Case Study of Boone and Winnebago Counties and Its Statewide Applicability. 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.