Dyfyniad APA

Thoms D Cook. (1979). Quasi-experimentation: Design and analysis issues for field settings. Boston, Massachusetts: Houghton Mifflin.

Dyfyniad Arddull Chicago

Thoms D Cook. Quasi-experimentation: Design and Analysis Issues for Field Settings. Boston, Massachusetts: Houghton Mifflin, 1979.

Dyfyniad MLA

Thoms D Cook. Quasi-experimentation: Design and Analysis Issues for Field Settings. Boston, Massachusetts: Houghton Mifflin, 1979.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.