Pyke, S. W., & Agnew, N. M. (1991). The science game: An introduction to research in the social sciences (5th ed.). Prentice hall.

Pyke, Sandra W., and Neil Mck Agnew. The Science Game: An Introduction to Research in the Social Sciences. 5th ed. New Jersey: Prentice hall, 1991.

Pyke, Sandra W., and Neil Mck Agnew. The Science Game: An Introduction to Research in the Social Sciences. 5th ed. Prentice hall, 1991.