Frey, L. R., & Botan, C. H. (2000). Investigating communication: An introduction to research methods. Boston: Allyn and Bacon.
استشهاد بنمط شيكاغوFrey, Lawrence R., و Carl H. Botan. Investigating Communication: An Introduction to Research Methods. Boston: Allyn and Bacon, 2000.
MLA استشهادFrey, Lawrence R., و Carl H. Botan. Investigating Communication: An Introduction to Research Methods. Boston: Allyn and Bacon, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.