APA (7th ed.) Citation

Geological Survey (U.S.). (1989). Natchitoches, Louisiana--Texas, 1986: 1:100 000-scale metric topographic map : 30 x 60 minute series (topographic). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Natchitoches, Louisiana--Texas, 1986: 1:100 000-scale Metric Topographic Map : 30 X 60 Minute Series (topographic). Reston, Va.: The Survey, 1989.

MLA (8th ed.) Citation

Geological Survey (U.S.). Natchitoches, Louisiana--Texas, 1986: 1:100 000-scale Metric Topographic Map : 30 X 60 Minute Series (topographic). The Survey, 1989.