@book{300042,
	author = {Simons, Anna, and Army War College (U.S.).},
	title = {21st-century challenges of command :},
	publisher = {Strategic Studies Institute and U.S. Army War College Press,},
	year = {2017.},
	series = {Letort papers},
	address = {Carlisle, PA :},
	note = {"May 2017."},
	url = {https://purl.fdlp.gov/GPO/gpo83218}
}