KERROD, R. Encyclopedi of science 10: Transportation from the bicycle to spacecraft. Macmillan Publishinng Company.
Lua i Stíl Chicago (17ú heag.)KERROD, Robin. Encyclopedi of Science 10: Transportation from the Bicycle to Spacecraft. Macmillan Publishinng Company.
Lua MLA (8ú heag.)KERROD, Robin. Encyclopedi of Science 10: Transportation from the Bicycle to Spacecraft. Macmillan Publishinng Company.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.