Franklin

MLA

Cleff, Samuel Harold. Post-conditioning Labeling and the Stimulus Generalization Gradient. [Philadelphia], 1958.

APA

Cleff, S. Harold. (1958). Post-conditioning labeling and the stimulus generalization gradient. [Philadelphia].

Chicago

Cleff, Samuel Harold. Post-Conditioning Labeling and the Stimulus Generalization Gradient. [Philadelphia], 1958.