APA aipamena

Barnes,Ralph M. (1957). Work Sampling (IInd Edition,1957.). John Wiley & Sons,INC..

Chicago Style aipamena

Barnes,Ralph M. Work Sampling. IInd Edition,1957. New York: John Wiley & Sons,INC., 1957.

MLA aipamena

Barnes,Ralph M. Work Sampling. IInd Edition,1957. John Wiley & Sons,INC., 1957.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.