APA (7th ed.) Citation

United States. Bureau of Land Management. (1987). Willcox quadrangle, Arizona--New Mexico, 1978: 1:100 000 scale series (planimetric) (Rev. 1987.). The Bureau.

Chicago Style (17th ed.) Citation

United States. Bureau of Land Management. Willcox Quadrangle, Arizona--New Mexico, 1978: 1:100 000 Scale Series (planimetric). Rev. 1987. Reston, Va.: The Bureau, 1987.

MLA (9th ed.) Citation

United States. Bureau of Land Management. Willcox Quadrangle, Arizona--New Mexico, 1978: 1:100 000 Scale Series (planimetric). Rev. 1987. The Bureau, 1987.