Newly recognized en echelon fall lines in the Piedmont and Blue Ridge provinces of North Carolina and Virginia, with a discussion of their possible ages and origins
MLA
Weems, R. E. Newly Recognized En Echelon Fall Lines In the Piedmont and Blue Ridge Provinces of North Carolina and Virginia, with a Discussion of Their Possible Ages and Origins. Reston, VA: U.S. Geological Survey , 1998
APA, 7th edition
Weems, R. E. (1998). Newly recognized en echelon fall lines in the Piedmont and Blue Ridge provinces of North Carolina and Virginia, with a discussion of their possible ages and origins. Reston, VA: U.S. Geological Survey
Chicago, 17th edition
Weems, R. E. Newly recognized en echelon fall lines in the Piedmont and Blue Ridge provinces of North Carolina and Virginia, with a discussion of their possible ages and origins. Reston, VA: U.S. Geological Survey , 1998