Solso, R. L., & Johnson, H. H. (1998). Experimental psychology: A case approach (6th.ed.). Longman.

Solso, Robert L., and Homer H. Johnson. Experimental Psychology: A Case Approach. 6th.ed. New York: Longman, 1998.

Solso, Robert L., and Homer H. Johnson. Experimental Psychology: A Case Approach. 6th.ed. Longman, 1998.