Savage, R. D., Britton, P. G., George, S., O’Connor, D., & Hall, E. H. (1972). A developmental investigation of intellectual functioning in the community aged. The Journal of Genetic Psychology ; Child Behavior, Animal Behavior, and Comparative Psychology, 121(1 st Half), 163–167.

Savage, R. D., P. G. Britton, S. George, D. O’Connor, and E. H. Hall. “A developmental investigation of intellectual functioning in the community aged.” The Journal of Genetic Psychology ; Child Behavior, Animal Behavior, and Comparative Psychology 121, no. 1 st Half (1972): 163–67.

Savage RD, Britton PG, George S, O’Connor D, Hall EH. A developmental investigation of intellectual functioning in the community aged. The Journal of genetic psychology ; child behavior, animal behavior, and comparative psychology. 1972;121(1 st Half):163–7.

Savage, R. D., et al. “A developmental investigation of intellectual functioning in the community aged.” The Journal of Genetic Psychology ; Child Behavior, Animal Behavior, and Comparative Psychology, vol. 121, no. 1 st Half, 1972, pp. 163–67.

Savage RD, Britton PG, George S, O’Connor D, Hall EH. A developmental investigation of intellectual functioning in the community aged. The Journal of genetic psychology ; child behavior, animal behavior, and comparative psychology. 1972;121(1 st Half):163–167.