Historical handbook series.

APA Citation

United States. National Park Service. Historical handbook series. Washington D.C.: U.S. Govt. Print. Off., Supt. of Docs.

MLA Citation

United States. National Park Service. Historical Handbook Series. Washington D.C.: U.S. Govt. Print. Off., Supt. of Docs,

Warning: These citations may not always be complete (especially for serials).