(1975). Revised Nuffield biology: Teacher's guide. Published for the Nuffield Foundation by Longman Group.
Lua i Stíl Chicago (17ú heag.)Revised Nuffield Biology: Teacher's Guide. England: Published for the Nuffield Foundation by Longman Group, 1975.
Lua MLA (9ú heag.)Revised Nuffield Biology: Teacher's Guide. Published for the Nuffield Foundation by Longman Group, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.