APA aipamena

Lester, J. D., & Lester, J. D. (2003). Principles of writing research papers. Longman.

Chicago Style aipamena

Lester, James D., and James D. Lester. Principles of Writing Research Papers. New York: Longman, 2003.

MLA aipamena

Lester, James D., and James D. Lester. Principles of Writing Research Papers. Longman, 2003.