McGuinness, C. L. (1947). Geology and ground-water resources of Puerto Rico.
Cita Chicago Style (17a ed.)McGuinness, C. L. Geology and Ground-water Resources of Puerto Rico. 1947.
Cita MLA (8a ed.)McGuinness, C. L. Geology and Ground-water Resources of Puerto Rico. 1947.
Precaución: Estas citas no son 100% exactas.