ROMANES     G. J. Romanes
Animal Intelligence
New York: Appleton-Century-Crofts, 1912
(Originally published in 1882)

SHANNON & WEAVER     Shannon, Claude & Warren Weaver
The Mathematical Theory of Communication
Urbana, Illinois: University of Illinois Press, 1949

SKINNER 1957     B. F. Skinner
Verbal Behavior
New York: Appleton-Century-Crofts, 1957

SKINNER 1960     B. F. Skinner
Walden Two
New York: Macmillan, 1960

SKINNER 1971     B. F. Skinner
Beyond Freedom and Dignity
New York: Knopf, 1971

THORNDIKE     Edward L. Thorndike
Animal Intelligence
New York: Macmillan, 1911

WATSON     John B. Watson
Behaviorism
Chicago: University of Chicago Press, 1924