Berry, R. (1986). How to write a research paper (2nd ed.). Pergamon Press.
Cita Chicago Style (17a ed.)Berry, Ralph. How to Write a Research Paper. 2nd ed. Oxford: Pergamon Press, 1986.
Cita MLA (9a ed.)Berry, Ralph. How to Write a Research Paper. 2nd ed. Pergamon Press, 1986.
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