Morgan, J. G. (2002). Investigating biologyJudith Giles Morgan, M. Eloise Brown Carter. Benjamin Cummings.
Lua i Stíl Chicago (17ú heag.)Morgan, Judith Giles. Investigating BiologyJudith Giles Morgan, M. Eloise Brown Carter. Benjamin Cummings, 2002.
Lua MLA (8ú heag.)Morgan, Judith Giles. Investigating BiologyJudith Giles Morgan, M. Eloise Brown Carter. Benjamin Cummings, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.