Cottam, K. M., & Pelton, R. W. (1977). Writer's research handbook: The research bible for freelance writers. A. S. Barnes.
Lua i Stíl Chicago (17ú heag.)Cottam, Keith M., agus Robert W. Pelton. Writer's Research Handbook: The Research Bible for Freelance Writers. South Brunswick: A. S. Barnes, 1977.
Lua MLA (9ú heag.)Cottam, Keith M., agus Robert W. Pelton. Writer's Research Handbook: The Research Bible for Freelance Writers. A. S. Barnes, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.