APA

Ratcliffe, N. M., & Geological Survey (U.S.),. (1975). Tectonic studies of the Berkshire massif, western Massachusetts, Connecticut, and Vermont. Washington: U.S. Govt. Print. Off.

MLA

Ratcliffe, Nicholas M. Tectonic Studies of the Berkshire Massif, Western Massachusetts, Connecticut, and Vermont. Washington: U.S. Govt. Print. Off, 1975. Print.

CHICAGO

Ratcliffe, Nicholas M. 1975. Tectonic studies of the Berkshire massif, western Massachusetts, Connecticut, and Vermont. Washington: U.S. Govt. Print. Off.

HARVARD

RATCLIFFE, N. M. (1975). Tectonic studies of the Berkshire massif, western Massachusetts, Connecticut, and Vermont. Washington, U.S. Govt. Print. Off.

TURABIAN

Ratcliffe, Nicholas M. Tectonic Studies of the Berkshire Massif, Western Massachusetts, Connecticut, and Vermont. Washington: U.S. Govt. Print. Off, 1975.