5,280英尺(1,610米) 。 Broncos Ditching Synthetic Field At Mile High, Using Kentucky Bluegrass Grown In Colorado. February 11, 2015 [2022-12-22]. (原始内容存档于2022-05-23)
Mushrooms of West Virginia and the Central Appalachians. Kentucky: University Press ofKentucky. 2003: 100 [2008-07-31]. ISBN 978-0-8131-9039-6. (原始内容存档于2017-03-27)