Bench, G. N. (1959). Learning guide in biology: Tests. Lyons & Carnahan.
Lua i Stíl Chicago (17ú heag.)Bench, Gerald N. Learning Guide in Biology: Tests. [Chicago?]: Lyons & Carnahan, 1959.
Lua MLA (8ú heag.)Bench, Gerald N. Learning Guide in Biology: Tests. Lyons & Carnahan, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.