American Psychological Association., & American Psychological Association. (1994). Publication manual of the American Psychological Association (4th ed.). Washington, DC: American Psychological Association.
Chicago-tyylinen lähdeviittausAmerican Psychological Association., ja American Psychological Association. Publication Manual of the American Psychological Association. 4th ed. Washington, DC: American Psychological Association, 1994.
MLA-viiteAmerican Psychological Association., ja American Psychological Association. Publication Manual of the American Psychological Association. 4th ed. Washington, DC: American Psychological Association, 1994.
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