(1991). Investigating Communication An Introduction To Research Methodes Lawrence R. Frey ... [et Al.]. Prentice-Hall.
Chicago-viite (17. p.)Investigating Communication An Introduction To Research Methodes Lawrence R. Frey ... [et Al.]. Prentice-Hall, 1991.
MLA-viite (8. p.)Investigating Communication An Introduction To Research Methodes Lawrence R. Frey ... [et Al.]. Prentice-Hall, 1991.
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