APA
Skinner B., . (1948). Waldon Two. : Mcmillan Publishing Company.
Chicago
Skinner B.F, . 1948. Waldon Two. : Mcmillan Publishing Company.
Harvard
Skinner B., . (1948). Waldon Two. : Mcmillan Publishing Company.
MLA
Skinner B.F, . Waldon Two. : Mcmillan Publishing Company. 1948.
