Christian Brothers. (1949). The De La Salle arithmetics: A practical course for school and life (1949 Edition.). Brothers of the Christian schools, La Salle Bureau.
Chicago-Zitierstil (17. Ausg.)Christian Brothers. The De La Salle Arithmetics: A Practical Course for School and Life. 1949 Edition. New York: Brothers of the Christian schools, La Salle Bureau, 1949.
MLA-Zitierstil (8. Ausg.)Christian Brothers. The De La Salle Arithmetics: A Practical Course for School and Life. 1949 Edition. Brothers of the Christian schools, La Salle Bureau, 1949.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.