Cita APA (7a ed.)

Baird, S. W. (1900). Graded work in arithmetic. Fourth book, intermediate grades. American Book Co.

Cita Chicago Style (17a ed.)

Baird, S. W. Graded Work in Arithmetic. Fourth Book, Intermediate Grades. Nuew York-Cincinnati- Chicago: American Book Co, 1900.

Cita MLA (9a ed.)

Baird, S. W. Graded Work in Arithmetic. Fourth Book, Intermediate Grades. American Book Co, 1900.