Tamar, J.M. (1962). Educational and Physical Growth. University of London Press.
2.
Elliott, D.S. (1962). An Opportunity and its Development. Health Education Journal, Vol. 20, No. 3, pp. 128-132.
3.
Ferrer, H.P. and Hancock, F.R. (1966). Breaking Down the Barriers-An Experiment in,Sex Education. Health Education Journal , Vol. 25, No. 1, pp. 22-27.
4.
Chanter, A. (1966). Teaching 10-year-olds about Sex. Where ?, No. 23, pp. 10-11.
