Clayton quadrangle (CLA) /
compiled and edited by Nenad Spoljaric, with contributions by the Delaware Geological Survey staff.
APA Citation
Spoljaric, N., Delaware Geological Survey. (1988). Clayton quadrangle (CLA). [Dover?]: State of Delaware, University of Delaware, Delaware Geological Survey.
MLA Citation
Spoljaric, Nenad, and Delaware Geological Survey. Clayton Quadrangle (CLA). [Dover?]: State of Delaware, University of Delaware, Delaware Geological Survey, 1988.
Warning: These citations may not always be complete (especially for serials).