LESTER, J. D. (1999). Writing research papers: A complete guide. Longman.
Cita Chicago (17th ed.)LESTER, James D. Writing Research Papers: A Complete Guide. Longman, 1999.
Cita MLA (9th ed.)LESTER, James D. Writing Research Papers: A Complete Guide. Longman, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.