Solso, R. L., & Johnson, H. H. (1989). An introduction to experimental design in psychology: A case approach (4th.ed.). Harper & Row.

Solso, Robert L., and Homer H. Johnson. An Introduction to Experimental Design in Psychology: A Case Approach. 4th.ed. New York: Harper & Row, 1989.

Solso, Robert L., and Homer H. Johnson. An Introduction to Experimental Design in Psychology: A Case Approach. 4th.ed. Harper & Row, 1989.