Publications of Place that refer to Zimmerman (1959). Sustained performance in rats based on secondary reinforcement.
Place, U. T. (1982). Skinner's Verbal Behavior III - how to improve Parts I and II. Behaviorism, 10, 117-136. www.jstor.org/stable/27759002
[References]  [2 referring publications by Place]
Download: 1982 Skinner's Verbal Behavior III - How to Improve Parts I and II