Gaya APA

Hullfish, H, G., Smith, P, G. (1968). Reflective thinking : the method of education . New York: Dodd, Mead and Co..

Gaya MLA

Hullfish, H., Gordon., Smith, Philip, G.. "Reflective thinking : the method of education". New York: Dodd, Mead and Co., 1968. Text.