Não informado. (1970). International Journal of Mathematical Education in Science and Technology. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Não informado. International Journal of Mathematical Education in Science and Technology. London: John Wiley & Sons, 1970.
Lua MLA (8ú heag.)Não informado. International Journal of Mathematical Education in Science and Technology. John Wiley & Sons, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.