Pennsylvania's birds of pray,
by Robert T. McDowell and Leo A. Luttringer, jr.
APA Citation
Pennsylvania Game Commission., Luttringer, L. A., McDowell, R. D. (1948). Pennsylvania's birds of pray. Harrisburg.
MLA Citation
Pennsylvania Game Commission, Leo A Luttringer, and Robert D McDowell. Pennsylvania's Birds of Pray. Harrisburg, 1948.
Warning: These citations may not always be complete (especially for serials).