MEYERS, L. S., & GROSSEN, N. S. (1974). Behavioral research: Theory, procedure, and design. W.H. Freeman and Company.
Dyfyniad Arddull ChicagoMEYERS, Lawrence S., and Neal S. GROSSEN. Behavioral Research: Theory, Procedure, and Design. San Fancisco: W.H. Freeman and Company, 1974.
Dyfyniad MLAMEYERS, Lawrence S., and Neal S. GROSSEN. Behavioral Research: Theory, Procedure, and Design. W.H. Freeman and Company, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.