The post office of the United States,
by Pao Hsun Chu.
APA Citation
Chu, P. Hsun. (1932). The post office of the United States. 2d ed. New York.
MLA Citation
Chu, Pao Hsun, 1900-. The Post Office of the United States. 2d ed. New York, 1932.
Warning: These citations may not always be complete (especially for serials).