Gaya APA

Cook, T, D. (1979). Quasi experimentation : Design and analysis issues for field settings . USA: Houghton mifflin company.

Gaya MLA

Cook, Thomas, D.. "Quasi experimentation : Design and analysis issues for field settings". USA: Houghton mifflin company, 1979. Hibah Buku Dra. Anita Lestari,.