Não informado. (1905). School science and mathematics. School Science and Mathematics Association.
Chicago-Zitierstil (17. Ausg.)Não informado. School Science and Mathematics. Menasha, Wis: School Science and Mathematics Association, 1905.
MLA-Zitierstil (8. Ausg.)Não informado. School Science and Mathematics. School Science and Mathematics Association, 1905.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.