EVERETT, P. B. (1973) "Use of the reinforcement procedure to increase bus ridership."Proceedings, 81st Annual Convention, American Psychological Association, Montreal, Vol. 8: 891-892.
5.
FINNI E, W. C. (1973) "Field experiments in litter control."Environment & Behavior5, 2: 123-144.
6.
FORSYTHE, J. J. (1972) "Recycling of paper."TAPPI (J. of the Technical Association of the Pulp and Paper Industry)55, 2: 679-690.
7.
GELLER, E. S. (1973a) "Prompting a consumer behavior for pollution control."J. of Applied Behavior Analysis6, 3: 367-376.
8.
GELLER, E. S. (1973b) "Prompting anti-litter behavior."Proceedings, 81st Annual Convention, American Psychological Association, Montreal, Vol. 8: 901-902.
9.
MILLIER, S. P. (1974) "Recycling can help alleviate nationwide newsprint shortage."Garfield, N.J.: Garden State Paper Company, report.
10.
SEWELL, W.R.D. and H. D. FOSTER (1971) "Environmental revival."Environment & Behavior3, 2: 123-134.
11.
SIEGEL, S. (1956) Nonparametric Statistics for the Behavioral Sciences. New York: McGraw-Hill.