Washington, D.C.: Brookings Institution, 1987.

Steury, Donald P., ed.

Estimates on Soviet Military Power 1954 to 1984: A Selection.

Washington. D.C.: Central Intelligence Agency, 1994. ---.

Sherman Kent and the Board of National Estimates.

Washington, D.C.: Central Intelligence Agency, 1994.

Stockton, William, and John Noble Wilford.

Spaceliner.

New York: Times Books, 1981.

Sullivan, Walter.

अज्ञात पृष्ठ