Ferrell, R. W. (1970). Customer-oriented planning. D.B.Taraporewala.
Chicago Style aipamenaFerrell, Robert W. Customer-oriented Planning. Mumbai: D.B.Taraporewala, 1970.
MLA aipamenaFerrell, Robert W. Customer-oriented Planning. D.B.Taraporewala, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.