Cita APA (7th ed.)

Johnston, R. H. (1997). Hydrologic budgets of regional aquifer systems of the United States for predevelopment and development conditions GB1199.2 .J. U.S. Geological Survey.

Cita Chicago (17th ed.)

Johnston, Richard H. Hydrologic Budgets of Regional Aquifer Systems of the United States for Predevelopment and Development Conditions GB1199.2 .J. Denver, Colorado, USA: U.S. Geological Survey, 1997.

Cita MLA (9th ed.)

Johnston, Richard H. Hydrologic Budgets of Regional Aquifer Systems of the United States for Predevelopment and Development Conditions GB1199.2 .J. U.S. Geological Survey, 1997.