APA

cozby P. C., . (2007). methods in behavioral research. newyork: mcgraw-hill.

Chicago

cozby PAUL C, . 2007. methods in behavioral research. newyork: mcgraw-hill.

Harvard

cozby P. C., . (2007). methods in behavioral research. newyork: mcgraw-hill.

MLA

cozby PAUL C, . methods in behavioral research. newyork: mcgraw-hill. 2007.