Lester, J. D. (1987). Writing research papers: A complete guide (5th ed.). Scott, Foresman.
Cita Chicago (17th ed.)Lester, James D. Writing Research Papers: A Complete Guide. 5th ed. Glenview, Ill: Scott, Foresman, 1987.
Cita MLA (9th ed.)Lester, James D. Writing Research Papers: A Complete Guide. 5th ed. Scott, Foresman, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.