APA
Brueckner Leo, Grossnickle Foster E Merton Elda L, . (1947). Arithmetic we use: Grade 6. Chicago, USA: The John C Winston Company.
Chicago
Brueckner Leo, Grossnickle Foster E Merton Elda L, . 1947. Arithmetic we use: Grade 6. Chicago, USA: The John C Winston Company.
Harvard
Brueckner Leo, Grossnickle Foster E Merton Elda L, . (1947). Arithmetic we use: Grade 6. Chicago, USA: The John C Winston Company.
MLA
Brueckner Leo, Grossnickle Foster E Merton Elda L, . Arithmetic we use: Grade 6. Chicago, USA: The John C Winston Company. 1947.
